- routing-wg - mailman.ripe.net

The Cidr Report
by CIDR Report 03 Aug '02

03 Aug '02

This is an auto-generated mail on Fri Aug 2 23:00:00 PDT 2002 It is not checked before it leaves my workstation. However, hopefully you will find this report interesting and will take the time to look through this to see if you can improve the amount of aggregation you perform. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report. NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for the regional version of this report. NEW: Check http://www.employees.org/~tbates/autnums.html for a complete list of autonomous system number to name mappings as used by the CIDR-Report. The report is split into sections: 0) General Status List the route table history for the last week, list any possibly bogus routes seen and give some status on ASes. 1) Gains by aggregating at the origin AS level This lists the "Top 30" players who if they decided to aggregate their announced classful prefixes at the origin AS level could make a significant difference in the reduction of the current size of the Internet routing table. This calculation does not take into account the inclusion of holes when forming an aggregate so it is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does give some indication of ASes participating in CIDR. Clearly, it is generally a good thing to see a large amount of withdrawls. 3) Interesting aggregates Interesting here means not an aggregate made as a set of classful routes. Thanks to GX Networks for giving me access to their routing tables once a day. Please send any comments about this report directly to CIDR Report <cidr-report(a)cisco.com>. ------------------------------------------------------------------------------ CIDR REPORT for 02Aug02 0) General Status Table History ------------- Date Prefixes 260702 112031 270702 112241 280702 112472 290702 112259 300702 112104 310702 112424 010802 112379 020802 112557 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- AS Summary ---------- Number of ASes in routing system: 13363 Number of ASes announcing only one prefix: 8134 (4583 cidr, 3551 classful) Largest number of cidr routes: 717 announced by AS3908 Largest number of classful routes: 1212 announced by AS701 1) Gains by aggregating at the origin AS level --- 02Aug02 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1085 835 250 23.0% Telstra Pty Ltd AS701 1212 971 241 19.9% UUNET Technologies, Inc. AS17557 289 96 193 66.8% Pakistan Telecom AS6595 230 58 172 74.8% DoD Education Activity Network As AS852 540 403 137 25.4% Telus Advanced Communications AS7018 809 682 127 15.7% AT&T AS16473 195 77 118 60.5% Bell South AS1239 516 419 97 18.8% Sprint AS4151 237 142 95 40.1% USDA AS19632 99 5 94 94.9% Metropolis Intercom S.A. AS12302 120 27 93 77.5% MobiFon S.A. AS7303 163 71 92 56.4% Telecom Argentina Stet-France Tel AS16814 105 20 85 81.0% NSS, S.A. AS226 170 87 83 48.8% Los Nettos AS2048 178 103 75 42.1% State of Louisiana AS7046 294 220 74 25.2% UUNET Technologies, Inc. AS577 266 192 74 27.8% Bell Advanced Communications Inc. AS4755 204 131 73 35.8% Videsh Sanchar Nigam Ltd. Autonom AS4323 410 339 71 17.3% Time Warner Communications, Inc. AS2149 327 257 70 21.4% Performance Systems, Inc. AS724 219 157 62 28.3% DLA Systems Automation Center AS4293 246 185 61 24.8% Cable & Wireless USA AS3464 163 103 60 36.8% Alabama SuperComputer Network AS19834 64 4 60 93.8% NetForce, Inc. AS10620 85 25 60 70.6% TVCABLE BOGOTA AS1 442 384 58 13.1% GENUITY AS5515 243 186 57 23.5% Sonera Finland Autonomous System AS209 312 255 57 18.3% Qwest AS16758 63 6 57 90.5% IKON Office Solutions AS9498 85 29 56 65.9% BHARTI BT INTERNET LTD. Total 55365 42608 12757 23.0% For the rest of the previous weeks gain information please see http://www.employees.org:80/~tbates/cidr-report.html 2) Weekly Delta Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report 3) Interesting aggregates Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report

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Weekly Routing Table Report
by Routing Table Analysis 02 Aug '02

02 Aug '02

This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. Daily listings are sent to bgp-stats(a)lists.apnic.net For a graphical representation, please see http://www.apnic.net/stats/bgp. If you have any comments please contact Philip Smith <pfs(a)cisco.com>. Routing Table Report 20:00 +10GMT Fri 02 Aug, 2002 Analysis Summary ---------------- BGP routing table entries examined: 114554 Prefixes after maximum aggregation: 74000 Unique aggregates announced to Internet: 54612 Total ASes present in the Internet Routing Table: 13482 Origin-only ASes present in the Internet Routing Table: 11667 Origin ASes announcing only one prefix: 5179 Transit ASes present in the Internet Routing Table: 1815 Transit-only ASes present in the Internet Routing Table: 51 Average AS path length visible in the Internet Routing Table: 5.4 Max AS path length visible: 23 Illegal AS announcements present in the Routing Table: 1 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 36 Number of addresses announced to Internet: 1190731541 Equivalent to 70 /8s, 249 /16s and 31 /24s Percentage of available address space announced: 32.1 Percentage of allocated address space announced: 59.4 Percentage of available address space allocated: 54.1 Total number of prefixes smaller than registry allocations: 46631 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 18897 Total APNIC prefixes after maximum aggregation: 11224 Prefixes being announced from the APNIC address blocks: 17403 Unique aggregates announced from the APNIC address blocks: 10608 APNIC Region origin ASes present in the Internet Routing Table: 1581 APNIC Region origin ASes announcing only one prefix: 517 APNIC Region transit ASes present in the Internet Routing Table: 276 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 12 Number of APNIC addresses announced to Internet: 90250720 Equivalent to 5 /8s, 97 /16s and 29 /24s Percentage of available APNIC address space announced: 59.4 APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239 17408 - 18431, 23552 - 24575 APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/7 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 76161 Total ARIN prefixes after maximum aggregation: 48172 Prefixes being announced from the ARIN address blocks: 53959 Unique aggregates announced from the ARIN address blocks: 17941 ARIN Region origin ASes present in the Internet Routing Table: 7934 ARIN Region origin ASes announcing only one prefix: 2550 ARIN Region transit ASes present in the Internet Routing Table: 783 Average ARIN Region AS path length visible: 5.3 Max ARIN Region AS path length visible: 17 Number of ARIN addresses announced to Internet: 193938192 Equivalent to 11 /8s, 143 /16s and 67 /24s Percentage of available ARIN address space announced: 72.2 ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106 2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153 3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466 7723 - 8191, 10240 - 12287, 13312 - 15359 16384 - 17407, 18432 - 20479, 21504 - 23551 25600 - 26623 ARIN Address Blocks 24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6, 208/7 and 216/8 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 19496 Total RIPE prefixes after maximum aggregation: 14604 Prefixes being announced from the RIPE address blocks: 16178 Unique aggregates announced from the RIPE address blocks: 10532 RIPE Region origin ASes present in the Internet Routing Table: 3916 RIPE Region origin ASes announcing only one prefix: 2112 RIPE Region transit ASes present in the Internet Routing Table: 740 Average RIPE Region AS path length visible: 5.9 Max RIPE Region AS path length visible: 23 Number of RIPE addresses announced to Internet: 112763936 Equivalent to 6 /8s, 184 /16s and 164 /24s Percentage of available RIPE address space announced: 74.7 RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614 2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631 6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383 20480 - 21503, 24576 - 25599 RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1252 1191 896 Telstra Pty Ltd 4538 562 1279 27 China Education and Research 703 414 376 326 UUNET 2907 364 1848 342 SINET Japan 2764 359 358 330 connect.com.au pty ltd 7474 320 296 213 Optus Communications Pty Ltd 17557 297 20 95 Pakistan Telecom 4134 293 2158 103 Data Communications Bureau 4755 291 112 77 Videsh Sanchar Nigam Ltd. Aut 4766 249 1506 156 Korea Internet Exchange for " 4814 220 79 14 China Telecom (Group) 9583 182 32 5 Satyam Infoway Ltd., 17676 172 2674 32 XTAGE CORPORATION 9443 170 45 68 Primus Telecommunications 7539 147 189 142 TANet2, sponsored by NSC, TAI 9768 144 385 74 Korea Telecom 7657 133 22 91 The Internet Group Limited 9800 125 191 18 CHINA UNICOM 4621 116 11 63 UNINET-TH 4713 115 1009 106 NTT Communications Corporatio RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 896 2423 755 UUNET - Commercial IP service 3301 396 923 346 TeliaNet Sweden 5515 320 783 180 Sonera Solution Autonomous Sy 3215 289 641 178 France Telecom Transpac 3352 275 531 31 Ibernet, Internet Access Netw 3320 269 1965 208 Deutsche Telekom AG 680 235 2150 232 DFN-IP service G-WiN 5400 209 85 97 BT Ignite European Backbone 1257 208 446 203 SWIPnet Swedish IP Network 719 183 306 128 LANLINK autonomous system 786 177 1873 177 The JANET IP Service 8708 143 23 139 Romania Data Systems S.A. 3303 141 548 140 Swisscom Ltd 2856 128 787 118 BTnet UK Regional network 12302 124 18 31 MobiFon S.A. 3269 113 690 68 TELECOM ITALIA 3246 112 317 107 Song Networks 5511 110 192 88 France Telecom 3233 105 10 9 RNC - Romanian Natioanal R&D 2874 102 85 39 Global One Services AB ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 1812 9242 1369 UUNET Technologies, Inc. 7018 1317 7402 941 AT&T 3908 1030 1656 490 Supernet, Inc. 1239 830 3249 650 Sprint 852 754 1175 451 Telus Advanced Communications 1 695 8050 445 GENUITY 4323 638 442 262 Time Warner Communications, I 7843 613 364 246 Adelphia Corp. 7132 588 663 135 Southwestern Bell Internet Se 209 542 2025 343 Qwest 7046 524 887 325 UUNET Technologies, Inc. 690 520 75 331 Merit Network 7066 486 203 254 Virginia Polytechnic Institut 7029 452 164 54 Alltel Information Services, 3549 448 821 316 Global Crossing 6197 378 599 48 BellSouth Network Solutions, 15290 376 297 192 AT&T Canada IES 2149 368 174 271 Performance Systems, Inc. 2914 363 2081 363 Verio, Inc. 6347 344 370 75 SAVVIS Communications Corpora Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 3908 1030 540 Supernet, Inc. 4538 562 535 China Education and Research 7132 588 453 Southwestern Bell Internet Se 7029 452 398 Alltel Information Services, 7018 1317 376 AT&T 4323 638 376 Time Warner Communications, I 7843 613 367 Adelphia Corp. 1221 1252 356 Telstra Pty Ltd 6197 378 330 BellSouth Network Solutions, 852 754 303 Telus Advanced Communications 1657 279 277 University of Louisville 4151 289 273 USDA 6347 344 269 SAVVIS Communications Corpora 4355 326 256 EarthLink, Inc. 1 695 250 GENUITY 3352 275 244 Ibernet, Internet Access Netw 18566 237 233 Covad Communications 7066 486 232 Virginia Polytechnic Institut 4755 291 214 Videsh Sanchar Nigam Ltd. Aut 7303 271 211 Telecom Argentina Stet-France List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies, Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 39.0.0.0/8 4554 Exchange Point Blocks 132.0.0.0/10 568 DISO-UNRRA 134.137.0.0/16 7170 AT&T Government Markets 135.0.0.0/13 10455 Lucent Technologies 137.0.0.0/13 568 DISO-UNRRA 138.94.0.0/16 1 GENUITY 158.0.0.0/13 568 DISO-UNRRA 164.233.0.0/16 6020 DISA NETWORK SERVICES 192.5.154.0/24 16588 Spider Web Hosting Solutions 192.44.0.0/19 702 UUNET - Commercial IP service 192.58.92.0/24 19548 Adelphia Business Solutions 192.72.0.0/18 4780 Digital United Inc. 192.72.0.0/16 4780 Digital United Inc. 192.83.16.0/20 5515 Sonera Solution Autonomous Sy 192.83.32.0/19 5515 Sonera Solution Autonomous Sy 192.83.96.0/22 5515 Sonera Solution Autonomous Sy 192.83.100.0/24 5515 Sonera Solution Autonomous Sy 192.91.198.0/24 2568 CTS Network Services 192.92.167.0/24 297 NASA Science Network 192.108.46.0/23 680 DFN-IP service G-WiN 192.119.135.0/24 270 NASA 192.135.50.0/24 7018 AT&T 192.136.79.0/24 719 LANLINK autonomous system 192.136.86.0/24 719 LANLINK autonomous system 192.136.87.0/24 719 LANLINK autonomous system 192.136.88.0/24 719 LANLINK autonomous system 192.139.62.0/24 6539 GT Group Telecom Services Cor 192.140.0.0/16 5511 France Telecom 192.153.136.0/21 568 DISO-UNRRA 192.156.0.0/19 568 DISO-UNRRA 192.156.164.0/24 19548 Adelphia Business Solutions 192.172.0.0/19 568 DISO-UNRRA 192.195.253.0/24 237 Merit Network 192.208.29.0/24 3908 Supernet, Inc. 192.208.30.0/23 3908 Supernet, Inc. 192.243.36.0/23 7168 Northwest Link Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:19 /9:7 /10:7 /11:12 /12:36 /13:86 /14:232 /15:415 /16:7285 /17:1472 /18:2665 /19:7710 /20:7498 /21:5282 /22:8005 /23:9672 /24:63338 /25:198 /26:177 /27:98 /28:88 /29:67 /30:113 /31:0 /32:72 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 3908 606 1030 Supernet, Inc. 702 540 896 UUNET - Commercial IP service 701 494 1812 UUNET Technologies, Inc. 690 466 520 Merit Network 7843 414 613 Adelphia Corp. 7066 389 486 Virginia Polytechnic Institut 7018 374 1317 AT&T 7029 357 452 Alltel Information Services, 1657 278 279 University of Louisville 6197 264 378 BellSouth Network Solutions, 6198 243 316 BellSouth Network Solutions, 3301 234 396 TeliaNet Sweden 18566 233 237 Covad Communications 3215 221 289 France Telecom Transpac 209 220 542 Qwest 1239 213 830 Sprint 1580 201 214 ANOSCEUR 3320 201 269 Deutsche Telekom AG 3352 201 275 Ibernet, Internet Access Netw 1 195 695 GENUITY Number of /24s announced per /8 block (Global) ---------------------------------------------- 4:3 12:525 13:10 15:2 17:6 20:3 24:699 25:1 32:41 38:9 40:6 44:1 57:13 61:326 62:236 63:1866 64:1227 65:1418 66:971 67:95 68:74 80:255 81:37 128:64 129:132 130:22 131:55 132:11 133:2 134:122 135:9 136:344 137:95 138:151 139:72 140:175 141:43 142:70 143:50 144:144 145:17 146:189 147:142 148:243 149:79 150:40 151:66 152:271 153:36 154:12 155:115 156:70 157:128 158:70 159:134 160:19 161:75 162:214 163:86 164:264 165:132 166:218 167:259 168:293 169:60 170:232 171:3 192:5467 193:2370 194:2114 195:909 196:414 198:3628 199:3155 200:2647 202:3308 203:4747 204:3256 205:2180 206:2652 207:2511 208:2611 209:2685 210:591 211:240 212:893 213:726 214:9 215:20 216:2847 217:475 218:31 End of report

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The Cidr Report
by CIDR Report 27 Jul '02

27 Jul '02

This is an auto-generated mail on Fri Jul 26 23:00:01 PDT 2002 It is not checked before it leaves my workstation. However, hopefully you will find this report interesting and will take the time to look through this to see if you can improve the amount of aggregation you perform. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report. NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for the regional version of this report. NEW: Check http://www.employees.org/~tbates/autnums.html for a complete list of autonomous system number to name mappings as used by the CIDR-Report. The report is split into sections: 0) General Status List the route table history for the last week, list any possibly bogus routes seen and give some status on ASes. 1) Gains by aggregating at the origin AS level This lists the "Top 30" players who if they decided to aggregate their announced classful prefixes at the origin AS level could make a significant difference in the reduction of the current size of the Internet routing table. This calculation does not take into account the inclusion of holes when forming an aggregate so it is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does give some indication of ASes participating in CIDR. Clearly, it is generally a good thing to see a large amount of withdrawls. 3) Interesting aggregates Interesting here means not an aggregate made as a set of classful routes. Thanks to GX Networks for giving me access to their routing tables once a day. Please send any comments about this report directly to CIDR Report <cidr-report(a)cisco.com>. ------------------------------------------------------------------------------ CIDR REPORT for 26Jul02 0) General Status Table History ------------- Date Prefixes 190702 111736 200702 112010 210702 111833 220702 111748 230702 111737 240702 111820 250702 112023 260702 112031 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- AS Summary ---------- Number of ASes in routing system: 13332 Number of ASes announcing only one prefix: 8124 (4581 cidr, 3543 classful) Largest number of cidr routes: 638 announced by AS3908 Largest number of classful routes: 1206 announced by AS701 1) Gains by aggregating at the origin AS level --- 26Jul02 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1088 838 250 23.0% Telstra Pty Ltd AS701 1206 967 239 19.8% UUNET Technologies, Inc. AS17557 293 101 192 65.5% Pakistan Telecom AS6595 230 58 172 74.8% DoD Education Activity Network As AS852 541 404 137 25.3% Telus Advanced Communications AS7018 808 681 127 15.7% AT&T AS16473 195 77 118 60.5% Bell South AS7303 170 73 97 57.1% Telecom Argentina Stet-France Tel AS1239 514 417 97 18.9% Sprint AS4151 237 142 95 40.1% USDA AS19632 99 5 94 94.9% Metropolis Intercom S.A. AS12302 118 25 93 78.8% MobiFon S.A. AS16814 105 20 85 81.0% NSS, S.A. AS226 171 88 83 48.5% Los Nettos AS7046 299 222 77 25.8% UUNET Technologies, Inc. AS4755 208 132 76 36.5% Videsh Sanchar Nigam Ltd. Autonom AS577 264 191 73 27.7% Bell Advanced Communications Inc. AS2149 347 274 73 21.0% Performance Systems, Inc. AS2048 179 107 72 40.2% State of Louisiana AS724 228 160 68 29.8% DLA Systems Automation Center AS4323 402 334 68 16.9% Time Warner Communications, Inc. AS3464 163 103 60 36.8% Alabama SuperComputer Network AS19834 64 4 60 93.8% NetForce, Inc. AS10620 85 25 60 70.6% TVCABLE BOGOTA AS16758 63 6 57 90.5% IKON Office Solutions AS5515 242 186 56 23.1% Sonera Finland Autonomous System AS3908 299 243 56 18.7% Supernet, Inc. AS209 311 255 56 18.0% Qwest AS9498 83 29 54 65.1% BHARTI BT INTERNET LTD. AS9051 81 27 54 66.7% INCONET Autonomous System Total 55129 42479 12650 22.9% For the rest of the previous weeks gain information please see http://www.employees.org:80/~tbates/cidr-report.html 2) Weekly Delta Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report 3) Interesting aggregates Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report

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Weekly Routing Table Report
by Routing Table Analysis 26 Jul '02

26 Jul '02

This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. Daily listings are sent to bgp-stats(a)lists.apnic.net For a graphical representation, please see http://www.apnic.net/stats/bgp. If you have any comments please contact Philip Smith <pfs(a)cisco.com>. Routing Table Report 20:00 +10GMT Fri 26 Jul, 2002 Analysis Summary ---------------- BGP routing table entries examined: 114301 Prefixes after maximum aggregation: 74045 Unique aggregates announced to Internet: 54685 Total ASes present in the Internet Routing Table: 13448 Origin-only ASes present in the Internet Routing Table: 11641 Origin ASes announcing only one prefix: 5154 Transit ASes present in the Internet Routing Table: 1807 Transit-only ASes present in the Internet Routing Table: 48 Average AS path length visible in the Internet Routing Table: 5.4 Max AS path length visible: 23 Illegal AS announcements present in the Routing Table: 8 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 34 Number of addresses announced to Internet: 1161595844 Equivalent to 69 /8s, 60 /16s and 139 /24s Percentage of available address space announced: 31.3 Percentage of allocated address space announced: 57.9 Percentage of available address space allocated: 54.1 Total number of prefixes smaller than registry allocations: 46284 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 18971 Total APNIC prefixes after maximum aggregation: 11212 Prefixes being announced from the APNIC address blocks: 17475 Unique aggregates announced from the APNIC address blocks: 10633 APNIC Region origin ASes present in the Internet Routing Table: 1578 APNIC Region origin ASes announcing only one prefix: 515 APNIC Region transit ASes present in the Internet Routing Table: 277 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 13 Number of APNIC addresses announced to Internet: 89876320 Equivalent to 5 /8s, 91 /16s and 103 /24s Percentage of available APNIC address space announced: 59.1 APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239 17408 - 18431, 23552 - 24575 APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/7 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 75906 Total ARIN prefixes after maximum aggregation: 48221 Prefixes being announced from the ARIN address blocks: 53985 Unique aggregates announced from the ARIN address blocks: 18013 ARIN Region origin ASes present in the Internet Routing Table: 7906 ARIN Region origin ASes announcing only one prefix: 2528 ARIN Region transit ASes present in the Internet Routing Table: 780 Average ARIN Region AS path length visible: 5.3 Max ARIN Region AS path length visible: 17 Number of ARIN addresses announced to Internet: 190252864 Equivalent to 11 /8s, 87 /16s and 7 /24s Percentage of available ARIN address space announced: 70.9 ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106 2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153 3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466 7723 - 8191, 10240 - 12287, 13312 - 15359 16384 - 17407, 18432 - 20479, 21504 - 23551 25600 - 26623 ARIN Address Blocks 24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6, 208/7 and 216/8 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 19417 Total RIPE prefixes after maximum aggregation: 14612 Prefixes being announced from the RIPE address blocks: 16114 Unique aggregates announced from the RIPE address blocks: 10485 RIPE Region origin ASes present in the Internet Routing Table: 3917 RIPE Region origin ASes announcing only one prefix: 2111 RIPE Region transit ASes present in the Internet Routing Table: 736 Average RIPE Region AS path length visible: 5.9 Max RIPE Region AS path length visible: 23 Number of RIPE addresses announced to Internet: 112921632 Equivalent to 6 /8s, 187 /16s and 12 /24s Percentage of available RIPE address space announced: 74.8 RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614 2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631 6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383 20480 - 21503, 24576 - 25599 RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1249 1191 897 Telstra Pty Ltd 4538 541 1278 26 China Education and Research 703 413 360 326 UUNET 2907 362 1832 340 SINET Japan 2764 359 358 330 connect.com.au pty ltd 7474 317 296 213 Optus Communications Pty Ltd 17557 296 20 103 Pakistan Telecom 4134 293 2142 103 Data Communications Bureau 4755 292 112 76 Videsh Sanchar Nigam Ltd. Aut 9443 253 45 68 Primus Telecommunications 4766 249 1506 156 Korea Internet Exchange for " 4814 215 79 14 China Telecom (Group) 9583 180 32 5 Satyam Infoway Ltd., 17676 169 2626 32 XTAGE CORPORATION 9768 143 384 73 Korea Telecom 7657 129 22 88 The Internet Group Limited 9800 125 191 18 CHINA UNICOM 4780 122 186 39 Digital United Inc. 7539 119 184 118 TANet2, sponsored by NSC, TAI 4621 115 11 63 UNINET-TH RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 898 2441 756 UUNET - Commercial IP service 3301 395 923 345 TeliaNet Sweden 5515 319 783 180 Sonera Solution Autonomous Sy 3215 277 640 175 France Telecom Transpac 3352 275 531 31 Ibernet, Internet Access Netw 3320 266 1964 205 Deutsche Telekom AG 680 235 2150 232 DFN-IP service G-WiN 5400 209 85 97 BT Ignite European Backbone 1257 208 446 203 SWIPnet Swedish IP Network 719 182 306 127 LANLINK autonomous system 786 177 1873 177 The JANET IP Service 3303 141 548 140 Swisscom Ltd 8708 140 23 136 Romania Data Systems S.A. 2856 128 787 118 BTnet UK Regional network 12302 123 18 30 MobiFon S.A. 3269 113 690 68 TELECOM ITALIA 3246 112 317 107 Song Networks 5511 110 192 88 France Telecom 3233 107 10 9 RNC - Romanian Natioanal R&D 2874 102 85 39 Global One Services AB ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 1822 9181 1375 UUNET Technologies, Inc. 7018 1316 7402 943 AT&T 3908 951 1653 492 Supernet, Inc. 1239 814 3245 642 Sprint 852 756 1175 452 Telus Advanced Communications 1 691 8067 442 GENUITY 4323 629 439 258 Time Warner Communications, I 7843 596 358 241 Adelphia Corp. 7132 583 659 133 Southwestern Bell Internet Se 209 536 2026 349 Qwest 7046 534 889 333 UUNET Technologies, Inc. 690 521 75 330 Merit Network 7066 485 203 254 Virginia Polytechnic Institut 7029 463 165 56 Alltel Information Services, 3549 428 812 308 Global Crossing 2149 388 176 288 Performance Systems, Inc. 15290 378 297 193 AT&T Canada IES 6197 377 611 37 BellSouth Network Solutions, 2914 367 2083 367 Verio, Inc. 6347 343 370 76 SAVVIS Communications Corpora Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 4538 541 515 China Education and Research 3908 951 459 Supernet, Inc. 7132 583 450 Southwestern Bell Internet Se 7029 463 407 Alltel Information Services, 7018 1316 373 AT&T 4323 629 371 Time Warner Communications, I 7843 596 355 Adelphia Corp. 1221 1249 352 Telstra Pty Ltd 6197 377 340 BellSouth Network Solutions, 852 756 304 Telus Advanced Communications 4151 289 273 USDA 6347 343 267 SAVVIS Communications Corpora 4355 324 255 EarthLink, Inc. 1 691 249 GENUITY 3352 275 244 Ibernet, Internet Access Netw 18566 236 232 Covad Communications 7066 485 231 Virginia Polytechnic Institut 7303 278 219 Telecom Argentina Stet-France 4755 292 216 Videsh Sanchar Nigam Ltd. Aut 1580 216 202 ANOSCEUR List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 55000 RESERVED 81.5.64.0/20 5467 MIPT-NET 65003 PRIVATE 202.92.84.0/24 9837 Powertel Ltd 65003 PRIVATE 202.92.84.0/22 9837 Powertel Ltd 65003 PRIVATE 202.92.85.0/24 9837 Powertel Ltd 65003 PRIVATE 202.92.119.0/24 9837 Powertel Ltd 65003 PRIVATE 203.56.32.0/24 9837 Powertel Ltd 65003 PRIVATE 203.56.33.0/24 9837 Powertel Ltd 5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies, Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 39.0.0.0/8 4554 Exchange Point Blocks 132.0.0.0/10 568 DISO-UNRRA 134.137.0.0/16 7170 AT&T Government Markets 135.0.0.0/13 10455 Lucent Technologies 137.0.0.0/13 568 DISO-UNRRA 138.94.0.0/16 1 GENUITY 158.0.0.0/13 568 DISO-UNRRA 164.233.0.0/16 6020 DISA NETWORK SERVICES 192.5.154.0/24 16588 Spider Web Hosting Solutions 192.44.0.0/19 702 UUNET - Commercial IP service 192.72.0.0/18 4780 Digital United Inc. 192.72.0.0/16 4780 Digital United Inc. 192.83.16.0/20 5515 Sonera Solution Autonomous Sy 192.83.32.0/19 5515 Sonera Solution Autonomous Sy 192.83.96.0/22 5515 Sonera Solution Autonomous Sy 192.83.100.0/24 5515 Sonera Solution Autonomous Sy 192.91.198.0/24 2568 CTS Network Services 192.92.167.0/24 297 NASA Science Network 192.108.46.0/23 680 DFN-IP service G-WiN 192.119.135.0/24 270 NASA 192.135.50.0/24 7018 AT&T 192.136.79.0/24 719 LANLINK autonomous system 192.136.86.0/24 719 LANLINK autonomous system 192.136.87.0/24 719 LANLINK autonomous system 192.136.88.0/24 719 LANLINK autonomous system 192.139.62.0/24 6539 GT Group Telecom Services Cor 192.140.0.0/16 5511 France Telecom 192.153.136.0/21 568 DISO-UNRRA 192.156.0.0/19 568 DISO-UNRRA 192.172.0.0/19 568 DISO-UNRRA 192.195.253.0/24 237 Merit Network 192.208.29.0/24 3908 Supernet, Inc. 192.208.30.0/23 3908 Supernet, Inc. 192.243.36.0/23 7168 Northwest Link Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:17 /9:6 /10:7 /11:12 /12:35 /13:86 /14:235 /15:415 /16:7276 /17:1458 /18:2663 /19:7703 /20:7470 /21:5253 /22:7976 /23:9740 /24:63292 /25:199 /26:158 /27:85 /28:74 /29:48 /30:72 /31:0 /32:21 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 702 542 898 UUNET - Commercial IP service 3908 529 951 Supernet, Inc. 701 502 1822 UUNET Technologies, Inc. 690 463 521 Merit Network 7843 401 596 Adelphia Corp. 7066 388 485 Virginia Polytechnic Institut 7018 370 1316 AT&T 7029 366 463 Alltel Information Services, 6197 262 377 BellSouth Network Solutions, 6198 237 310 BellSouth Network Solutions, 3301 233 395 TeliaNet Sweden 18566 232 236 Covad Communications 209 213 536 Qwest 3215 210 277 France Telecom Transpac 1239 203 814 Sprint 1580 203 216 ANOSCEUR 3352 200 275 Ibernet, Internet Access Netw 7046 199 534 UUNET Technologies, Inc. 3320 198 266 Deutsche Telekom AG 1 189 691 GENUITY Number of /24s announced per /8 block (Global) ---------------------------------------------- 4:3 12:515 13:10 15:2 17:6 20:3 24:690 25:1 32:41 38:9 40:6 44:1 57:13 61:321 62:237 63:1894 64:1219 65:1409 66:997 67:91 68:67 80:251 81:40 128:65 129:131 130:22 131:53 132:11 133:2 134:124 135:8 136:244 137:95 138:151 139:72 140:169 141:121 142:79 143:45 144:143 145:17 146:189 147:139 148:242 149:80 150:39 151:66 152:269 153:34 154:14 155:115 156:70 157:124 158:70 159:134 160:19 161:74 162:214 163:91 164:263 165:132 166:219 167:178 168:295 169:59 170:242 171:3 192:5463 193:2376 194:2101 195:925 196:415 198:3624 199:3179 200:2610 202:3313 203:4783 204:3250 205:2209 206:2679 207:2525 208:2612 209:2721 210:595 211:238 212:902 213:662 214:9 215:20 216:2833 217:469 218:27 End of report

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The Cidr Report
by CIDR Report 20 Jul '02

20 Jul '02

This is an auto-generated mail on Fri Jul 19 23:00:00 PDT 2002 It is not checked before it leaves my workstation. However, hopefully you will find this report interesting and will take the time to look through this to see if you can improve the amount of aggregation you perform. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report. NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for the regional version of this report. NEW: Check http://www.employees.org/~tbates/autnums.html for a complete list of autonomous system number to name mappings as used by the CIDR-Report. The report is split into sections: 0) General Status List the route table history for the last week, list any possibly bogus routes seen and give some status on ASes. 1) Gains by aggregating at the origin AS level This lists the "Top 30" players who if they decided to aggregate their announced classful prefixes at the origin AS level could make a significant difference in the reduction of the current size of the Internet routing table. This calculation does not take into account the inclusion of holes when forming an aggregate so it is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does give some indication of ASes participating in CIDR. Clearly, it is generally a good thing to see a large amount of withdrawls. 3) Interesting aggregates Interesting here means not an aggregate made as a set of classful routes. Thanks to GX Networks for giving me access to their routing tables once a day. Please send any comments about this report directly to CIDR Report <cidr-report(a)cisco.com>. ------------------------------------------------------------------------------ CIDR REPORT for 19Jul02 0) General Status Table History ------------- Date Prefixes 120702 111339 130702 111268 140702 111583 150702 111941 160702 112093 170702 111866 180702 111800 190702 111736 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 88.128.0.0/17 from AS9116 *** Bogus 88.128.128.0/17 from AS9116 *** Bogus 88.129.0.0/17 from AS9116 *** Bogus 88.129.128.0/17 from AS9116 AS Summary ---------- Number of ASes in routing system: 13270 Number of ASes announcing only one prefix: 8089 (4550 cidr, 3539 classful) Largest number of cidr routes: 629 announced by AS3908 Largest number of classful routes: 1221 announced by AS701 1) Gains by aggregating at the origin AS level --- 19Jul02 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1089 841 248 22.8% Telstra Pty Ltd AS701 1221 978 243 19.9% UUNET Technologies, Inc. AS17557 293 101 192 65.5% Pakistan Telecom AS6595 221 54 167 75.6% DoD Education Activity Network As AS852 538 401 137 25.5% Telus Advanced Communications AS7018 808 681 127 15.7% AT&T AS16473 195 77 118 60.5% Bell South AS7303 171 74 97 56.7% Telecom Argentina Stet-France Tel AS5515 437 341 96 22.0% Sonera Finland Autonomous System AS4151 236 141 95 40.3% USDA AS19632 99 5 94 94.9% Metropolis Intercom S.A. AS1239 517 423 94 18.2% Sprint AS12302 119 26 93 78.2% MobiFon S.A. AS16814 105 20 85 81.0% NSS, S.A. AS226 171 88 83 48.5% Los Nettos AS7046 306 227 79 25.8% UUNET Technologies, Inc. AS4755 209 133 76 36.4% Videsh Sanchar Nigam Ltd. Autonom AS2048 180 105 75 41.7% State of Louisiana AS577 263 190 73 27.8% Bell Advanced Communications Inc. AS4323 401 333 68 17.0% Time Warner Communications, Inc. AS724 214 152 62 29.0% DLA Systems Automation Center AS3464 163 103 60 36.8% Alabama SuperComputer Network AS19834 64 4 60 93.8% NetForce, Inc. AS10620 84 24 60 71.4% TVCABLE BOGOTA AS1 444 386 58 13.1% GENUITY AS209 315 258 57 18.1% Qwest AS16758 63 6 57 90.5% IKON Office Solutions AS9051 82 26 56 68.3% INCONET Autonomous System AS3908 297 241 56 18.9% Supernet, Inc. AS9498 84 29 55 65.5% BHARTI BT INTERNET LTD. Total 55004 42386 12618 22.9% For the rest of the previous weeks gain information please see http://www.employees.org:80/~tbates/cidr-report.html 2) Weekly Delta Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report 3) Interesting aggregates Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report

1 0

Weekly Routing Table Report
by Routing Table Analysis 19 Jul '02

19 Jul '02

This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. Daily listings are sent to bgp-stats(a)lists.apnic.net For a graphical representation, please see http://www.apnic.net/stats/bgp. If you have any comments please contact Philip Smith <pfs(a)cisco.com>. Routing Table Report 20:00 +10GMT Fri 19 Jul, 2002 Analysis Summary ---------------- BGP routing table entries examined: 113997 Prefixes after maximum aggregation: 73584 Unique aggregates announced to Internet: 53982 Total ASes present in the Internet Routing Table: 13381 Origin-only ASes present in the Internet Routing Table: 11573 Origin ASes announcing only one prefix: 5143 Transit ASes present in the Internet Routing Table: 1808 Transit-only ASes present in the Internet Routing Table: 50 Average AS path length visible in the Internet Routing Table: 5.4 Max AS path length visible: 16 Illegal AS announcements present in the Routing Table: 16 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 41 Number of addresses announced to Internet: 1179873784 Equivalent to 70 /8s, 83 /16s and 113 /24s Percentage of available address space announced: 31.8 Percentage of allocated address space announced: 58.8 Percentage of available address space allocated: 54.1 Total number of prefixes smaller than registry allocations: 46191 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 18841 Total APNIC prefixes after maximum aggregation: 11130 Prefixes being announced from the APNIC address blocks: 17370 Unique aggregates announced from the APNIC address blocks: 10548 APNIC Region origin ASes present in the Internet Routing Table: 1571 APNIC Region origin ASes announcing only one prefix: 516 APNIC Region transit ASes present in the Internet Routing Table: 277 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 13 Number of APNIC addresses announced to Internet: 89465184 Equivalent to 5 /8s, 85 /16s and 33 /24s Percentage of available APNIC address space announced: 58.8 APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239 17408 - 18431, 23552 - 24575 APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/7 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 75393 Total ARIN prefixes after maximum aggregation: 47868 Prefixes being announced from the ARIN address blocks: 53475 Unique aggregates announced from the ARIN address blocks: 17970 ARIN Region origin ASes present in the Internet Routing Table: 7868 ARIN Region origin ASes announcing only one prefix: 2528 ARIN Region transit ASes present in the Internet Routing Table: 787 Average ARIN Region AS path length visible: 5.3 Max ARIN Region AS path length visible: 16 Number of ARIN addresses announced to Internet: 189289040 Equivalent to 11 /8s, 72 /16s and 82 /24s Percentage of available ARIN address space announced: 70.5 ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106 2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153 3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466 7723 - 8191, 10240 - 12287, 13312 - 15359 16384 - 17407, 18432 - 20479, 21504 - 23551 25600 - 26623 ARIN Address Blocks 24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6, 208/7 and 216/8 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 19749 Total RIPE prefixes after maximum aggregation: 14586 Prefixes being announced from the RIPE address blocks: 16295 Unique aggregates announced from the RIPE address blocks: 9933 RIPE Region origin ASes present in the Internet Routing Table: 3895 RIPE Region origin ASes announcing only one prefix: 2099 RIPE Region transit ASes present in the Internet Routing Table: 729 Average RIPE Region AS path length visible: 5.9 Max RIPE Region AS path length visible: 16 Number of RIPE addresses announced to Internet: 115727904 Equivalent to 6 /8s, 229 /16s and 222 /24s Percentage of available RIPE address space announced: 76.6 RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614 2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631 6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383 20480 - 21503, 24576 - 25599 RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1258 1207 901 Telstra Pty Ltd 4538 558 1278 26 China Education and Research 703 406 359 321 UUNET Technologies, Inc. 2907 365 1849 342 SINET Japan 2764 358 358 329 connect.com.au pty ltd 7474 319 296 213 Optus Communications Pty Ltd 17557 296 20 103 Pakistan Telecom 4755 293 112 77 Videsh Sanchar Nigam Ltd. Aut 4134 291 2134 102 Data Communications Bureau 9443 252 45 67 Primus Telecommunications 4766 249 1506 156 Korea Internet Exchange for " 4814 215 79 14 China Telecom (Group) - Beiji 9583 180 32 5 Satyam Infoway Ltd., 17676 165 2562 30 XTAGE CORPORATION 9768 143 384 73 Korea Telecom 7657 128 22 87 The Internet Group Limited 9800 125 191 18 CHINA UNICOM 4780 122 186 39 Digital United Inc. 7539 120 184 119 TANet2, sponsored by NSC, TAI 4713 115 1009 106 NTT Communications Corporatio RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 911 2442 768 UUNET Technologies, Inc. 5515 647 785 188 Sonera Finland Autonomous Sys 3301 397 924 347 TeliaNet Sweden 3215 276 639 175 France Telecom / &Equant 3352 274 531 31 Ibernet, Internet Access Netw 3320 263 1962 202 Deutsche Telekom AG 680 235 2150 232 DFN-IP service G-WiN 5400 208 85 97 Concert European Core Network 1257 206 430 203 SWIPnet Swedish IP Network 719 189 306 128 LANLINK autonomous system 786 177 1873 177 The JANET IP Service 3303 140 548 139 Swisscom Ltd 8708 139 23 136 Romania Data Systems S.A. 2856 128 787 118 BTnet UK Regional network 12302 123 18 30 MobiFon S.A. 3269 113 690 68 TELECOM ITALIA 3246 112 317 107 Song Networks / Clinet 5511 110 192 88 France Telecom 3233 105 10 9 RNC - Romanian Natioanal R&D 2874 102 85 39 Global One Services AB ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 1844 9193 1386 UUNET Technologies, Inc. 7018 1298 7402 943 AT&T 3908 935 1643 503 Supernet, Inc. 1239 821 3276 643 Sprint 852 752 1175 450 Telus Advanced Communications 1 702 8078 451 GENUITY 7843 643 360 239 Adelphia Corp. 4323 627 439 258 Time Warner Communications, I 7132 583 659 133 Southwestern Bell Internet Se 209 540 2011 352 Qwest 7046 536 889 340 UUNET Technologies, Inc. 690 516 74 328 Merit Network 7066 485 203 254 Virginia Polytechnic Institut 7029 464 165 56 Alltel Information Services, 3549 434 828 314 Global Crossing 2914 396 2067 373 Verio, Inc. 15290 378 297 193 AT&T Canada IES 6197 370 547 36 BellSouth Network Solutions, 6347 345 370 77 SAVVIS Communications Corpora 2386 317 406 195 AT&T Data Communications Serv Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 4538 558 532 China Education and Research 5515 647 459 Sonera Finland Autonomous Sys 7132 583 450 Southwestern Bell Internet Se 3908 935 432 Supernet, Inc. 7029 464 408 Alltel Information Services, 7843 643 404 Adelphia Corp. 4323 627 369 Time Warner Communications, I 1221 1258 357 Telstra Pty Ltd 7018 1298 355 AT&T 6197 370 334 BellSouth Network Solutions, 852 752 302 Telus Advanced Communications 4151 288 272 USDA 6347 345 268 SAVVIS Communications Corpora 1 702 251 GENUITY 4355 303 251 EarthLink, Inc. 3352 274 243 Ibernet, Internet Access Netw 7066 485 231 Virginia Polytechnic Institut 18566 231 227 Covad Communications 4755 293 216 Videsh Sanchar Nigam Ltd. Aut 7303 278 215 Telecom Argentina Stet-France List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 26108 UNALLOCATED 64.70.35.0/24 3967 Exodus Communication 55000 RESERVED 81.5.64.0/20 5467 MIPT-NET 65003 PRIVATE 202.92.64.0/24 9837 Powertel Ltd 65003 PRIVATE 202.92.84.0/24 9837 Powertel Ltd 65003 PRIVATE 202.92.84.0/22 9837 Powertel Ltd 65003 PRIVATE 202.92.85.0/24 9837 Powertel Ltd 65003 PRIVATE 202.92.119.0/24 9837 Powertel Ltd 65003 PRIVATE 203.56.32.0/24 9837 Powertel Ltd 65003 PRIVATE 203.56.33.0/24 9837 Powertel Ltd 65527 PRIVATE 206.98.160.0/24 6221 US Cybersites, Inc 65156 PRIVATE 206.98.164.0/24 6221 US Cybersites, Inc 65527 PRIVATE 206.98.236.0/24 6221 US Cybersites, Inc 65156 PRIVATE 206.98.244.0/24 6221 US Cybersites, Inc 5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies, 65111 PRIVATE 207.51.32.0/24 6221 US Cybersites, Inc 65500 PRIVATE 208.144.80.0/24 6221 US Cybersites, Inc Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 39.0.0.0/8 4554 Exchange Point Blocks 88.128.0.0/17 9116 Goldenlines main autonomous s 88.128.128.0/17 9116 Goldenlines main autonomous s 88.129.0.0/17 9116 Goldenlines main autonomous s 88.129.128.0/17 9116 Goldenlines main autonomous s 132.0.0.0/10 568 DISO-UNRRA 134.137.0.0/16 7170 AT&T Government Markets 135.0.0.0/13 10455 Lucent Technologies 137.0.0.0/13 568 DISO-UNRRA 138.94.0.0/16 1 GENUITY 158.0.0.0/13 568 DISO-UNRRA 164.233.0.0/16 6020 DISA NETWORK SERVICES 192.5.154.0/24 16588 Spider Web Hosting Solutions 192.44.0.0/19 702 UUNET Technologies, Inc. 192.72.0.0/18 4780 Digital United Inc. 192.72.0.0/16 4780 Digital United Inc. 192.83.16.0/20 5515 Sonera Finland Autonomous Sys 192.83.32.0/19 5515 Sonera Finland Autonomous Sys 192.83.69.0/24 5515 Sonera Finland Autonomous Sys 192.83.72.0/21 5515 Sonera Finland Autonomous Sys 192.83.80.0/20 5515 Sonera Finland Autonomous Sys 192.83.96.0/22 5515 Sonera Finland Autonomous Sys 192.83.100.0/24 5515 Sonera Finland Autonomous Sys 192.91.198.0/24 2568 CTS Network Services 192.92.167.0/24 297 NASA Science Network 192.108.46.0/23 680 DFN-IP service G-WiN 192.119.135.0/24 270 NASA 192.135.50.0/24 7018 AT&T 192.136.79.0/24 719 LANLINK autonomous system 192.136.86.0/24 719 LANLINK autonomous system 192.136.87.0/24 719 LANLINK autonomous system 192.136.88.0/24 719 LANLINK autonomous system 192.139.62.0/24 6539 GT Group Telecom Services Cor 192.140.0.0/16 5511 France Telecom 192.153.136.0/21 568 DISO-UNRRA 192.156.0.0/19 568 DISO-UNRRA 192.172.0.0/19 568 DISO-UNRRA 192.195.253.0/24 237 Merit Network 192.208.29.0/24 3908 Supernet, Inc. 192.208.30.0/23 3908 Supernet, Inc. 192.243.36.0/23 7168 Northwest Link Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:19 /9:6 /10:7 /11:12 /12:36 /13:86 /14:235 /15:415 /16:7258 /17:1455 /18:2658 /19:7696 /20:7434 /21:5233 /22:7938 /23:9714 /24:63113 /25:203 /26:180 /27:86 /28:70 /29:49 /30:72 /31:0 /32:22 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 702 554 911 UUNET Technologies, Inc. 701 511 1844 UUNET Technologies, Inc. 3908 511 935 Supernet, Inc. 690 458 516 Merit Network 7843 448 643 Adelphia Corp. 5515 407 647 Sonera Finland Autonomous Sys 7066 388 485 Virginia Polytechnic Institut 7029 367 464 Alltel Information Services, 7018 352 1298 AT&T 6197 256 370 BellSouth Network Solutions, 6198 238 310 BellSouth Network Solutions, 3301 234 397 TeliaNet Sweden 18566 227 231 Covad Communications 1239 214 821 Sprint 209 213 540 Qwest 3215 209 276 France Telecom / &Equant 1580 205 218 HQ, 5th Signal Command 3352 199 274 Ibernet, Internet Access Netw 7046 198 536 UUNET Technologies, Inc. 3320 196 263 Deutsche Telekom AG Number of /24s announced per /8 block (Global) ---------------------------------------------- 4:3 12:502 13:10 15:2 17:6 20:3 24:750 25:1 32:41 38:9 40:6 44:1 57:13 61:297 62:227 63:1865 64:1192 65:1380 66:991 67:91 68:65 80:256 81:34 128:63 129:129 130:22 131:95 132:11 133:2 134:125 135:8 136:243 137:95 138:152 139:70 140:166 141:124 142:79 143:44 144:146 145:14 146:189 147:139 148:238 149:79 150:41 151:67 152:266 153:36 154:13 155:113 156:70 157:127 158:70 159:136 160:18 161:71 162:213 163:94 164:262 165:133 166:219 167:175 168:294 169:59 170:240 171:3 192:5507 193:2436 194:2177 195:920 196:410 198:3633 199:3170 200:2614 202:3323 203:4719 204:3235 205:2171 206:2609 207:2501 208:2601 209:2622 210:604 211:232 212:912 213:670 214:9 215:19 216:2821 217:472 218:28 End of report

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CIDR Report update
by Philip Smith 17 Jul '02

17 Jul '02

(apologies for duplicates) Hi everyone, As many of you have noticed, the CIDR Report web-site has been down for the last few weeks. I'm happy to report that the web-site is available again following the restoration of the webserver. Last night's CIDR Report run is now up on the website FYI: http://www.employees.org/~tbates/cidr-report.html Any issues or problems, please send e-mail to cidr-report(a)cisco.com. Thanks to all of you for your patience during this break in service. philip --

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The Cidr Report
by CIDR Report 13 Jul '02

13 Jul '02

This is an auto-generated mail on Fri Jul 12 23:00:00 PDT 2002 It is not checked before it leaves my workstation. However, hopefully you will find this report interesting and will take the time to look through this to see if you can improve the amount of aggregation you perform. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report. NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for the regional version of this report. NEW: Check http://www.employees.org/~tbates/autnums.html for a complete list of autonomous system number to name mappings as used by the CIDR-Report. The report is split into sections: 0) General Status List the route table history for the last week, list any possibly bogus routes seen and give some status on ASes. 1) Gains by aggregating at the origin AS level This lists the "Top 30" players who if they decided to aggregate their announced classful prefixes at the origin AS level could make a significant difference in the reduction of the current size of the Internet routing table. This calculation does not take into account the inclusion of holes when forming an aggregate so it is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does give some indication of ASes participating in CIDR. Clearly, it is generally a good thing to see a large amount of withdrawls. 3) Interesting aggregates Interesting here means not an aggregate made as a set of classful routes. Thanks to GX Networks for giving me access to their routing tables once a day. Please send any comments about this report directly to CIDR Report <cidr-report(a)cisco.com>. ------------------------------------------------------------------------------ CIDR REPORT for 12Jul02 0) General Status Table History ------------- Date Prefixes 050702 110820 060702 111129 070702 111069 080702 111088 090702 111212 100702 111153 110702 111369 120702 111339 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- AS Summary ---------- Number of ASes in routing system: 13208 Number of ASes announcing only one prefix: 8040 (4516 cidr, 3524 classful) Largest number of cidr routes: 615 announced by AS3908 Largest number of classful routes: 1230 announced by AS701 1) Gains by aggregating at the origin AS level --- 12Jul02 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1089 840 249 22.9% Telstra Pty Ltd AS701 1230 982 248 20.2% UUNET Technologies, Inc. AS17557 304 107 197 64.8% Pakistan Telecom AS6595 221 54 167 75.6% DoD Education Activity Network As AS852 549 407 142 25.9% Telus Advanced Communications AS7018 794 668 126 15.9% AT&T AS16473 195 77 118 60.5% Bell South AS7303 167 72 95 56.9% Telecom Argentina Stet-France Tel AS4151 235 140 95 40.4% USDA AS19632 99 5 94 94.9% Metropolis Intercom S.A. AS1239 519 425 94 18.1% Sprint AS12302 118 30 88 74.6% MobiFon S.A. AS16814 105 20 85 81.0% NSS, S.A. AS7046 315 231 84 26.7% UUNET Technologies, Inc. AS2048 181 103 78 43.1% State of Louisiana AS2149 367 294 73 19.9% Performance Systems, Inc. AS577 262 190 72 27.5% Bell Advanced Communications Inc. AS724 231 163 68 29.4% DLA Systems Automation Center AS4323 402 334 68 16.9% Time Warner Communications, Inc. AS3464 163 102 61 37.4% Alabama SuperComputer Network AS19834 64 4 60 93.8% NetForce, Inc. AS10620 84 24 60 71.4% TVCABLE BOGOTA AS1 444 386 58 13.1% GENUITY AS16758 63 6 57 90.5% IKON Office Solutions AS3908 296 240 56 18.9% Supernet, Inc. AS209 310 254 56 18.1% Qwest AS9498 83 28 55 66.3% BHARTI BT INTERNET LTD. AS9051 81 29 52 64.2% INCONET Autonomous System AS6535 65 16 49 75.4% Chilesat Servicios Empresariales AS703 271 225 46 17.0% UUNET Technologies, Inc. Total 54793 42301 12492 22.8% For the rest of the previous weeks gain information please see http://www.employees.org:80/~tbates/cidr-report.html 2) Weekly Delta Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report 3) Interesting aggregates Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report

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Weekly Routing Table Report
by Routing Table Analysis 12 Jul '02

12 Jul '02

This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. Daily listings are sent to bgp-stats(a)lists.apnic.net For a graphical representation, please see http://www.apnic.net/stats/bgp. If you have any comments please contact Philip Smith <pfs(a)cisco.com>. Routing Table Report 20:00 +10GMT Fri 12 Jul, 2002 Analysis Summary ---------------- BGP routing table entries examined: 113808 Prefixes after maximum aggregation: 73632 Unique aggregates announced to Internet: 53854 Total ASes present in the Internet Routing Table: 13333 Origin-only ASes present in the Internet Routing Table: 11543 Origin ASes announcing only one prefix: 5110 Transit ASes present in the Internet Routing Table: 1790 Transit-only ASes present in the Internet Routing Table: 50 Average AS path length visible in the Internet Routing Table: 5.4 Max AS path length visible: 22 Illegal AS announcements present in the Routing Table: 8 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 35 Number of addresses announced to Internet: 1180975672 Equivalent to 70 /8s, 100 /16s and 66 /24s Percentage of available address space announced: 31.9 Percentage of allocated address space announced: 58.9 Percentage of available address space allocated: 54.1 Total number of prefixes smaller than registry allocations: 46022 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 18655 Total APNIC prefixes after maximum aggregation: 11077 Prefixes being announced from the APNIC address blocks: 17207 Unique aggregates announced from the APNIC address blocks: 10502 APNIC Region origin ASes present in the Internet Routing Table: 1558 APNIC Region origin ASes announcing only one prefix: 506 APNIC Region transit ASes present in the Internet Routing Table: 275 Average APNIC Region AS path length visible: 5.2 Max APNIC Region AS path length visible: 13 Number of APNIC addresses announced to Internet: 88702624 Equivalent to 5 /8s, 73 /16s and 126 /24s Percentage of available APNIC address space announced: 58.3 APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239 17408 - 18431, 23552 - 24575 APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/7 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 75831 Total ARIN prefixes after maximum aggregation: 48036 Prefixes being announced from the ARIN address blocks: 53877 Unique aggregates announced from the ARIN address blocks: 17995 ARIN Region origin ASes present in the Internet Routing Table: 7845 ARIN Region origin ASes announcing only one prefix: 2517 ARIN Region transit ASes present in the Internet Routing Table: 773 Average ARIN Region AS path length visible: 5.3 Max ARIN Region AS path length visible: 22 Number of ARIN addresses announced to Internet: 189355856 Equivalent to 11 /8s, 73 /16s and 87 /24s Percentage of available ARIN address space announced: 70.5 ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106 2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153 3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466 7723 - 8191, 10240 - 12287, 13312 - 15359 16384 - 17407, 18432 - 20479, 21504 - 23551 25600 - 26623 ARIN Address Blocks 24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6, 208/7 and 216/8 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 19315 Total RIPE prefixes after maximum aggregation: 14519 Prefixes being announced from the RIPE address blocks: 16050 Unique aggregates announced from the RIPE address blocks: 9821 RIPE Region origin ASes present in the Internet Routing Table: 3881 RIPE Region origin ASes announcing only one prefix: 2087 RIPE Region transit ASes present in the Internet Routing Table: 719 Average RIPE Region AS path length visible: 5.9 Max RIPE Region AS path length visible: 16 Number of RIPE addresses announced to Internet: 116950816 Equivalent to 6 /8s, 248 /16s and 135 /24s Percentage of available RIPE address space announced: 77.5 RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614 2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631 6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383 20480 - 21503, 24576 - 25599 RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1257 1207 899 Telstra Pty Ltd 4538 466 1258 18 China Education and Research 703 408 358 323 UUNET Technologies, Inc. 2907 366 1865 341 SINET Japan 2764 361 358 332 connect.com.au pty ltd 7474 311 291 207 Optus Communications Pty Ltd 17557 307 20 109 Pakistan Telecom 4755 301 116 82 Videsh Sanchar Nigam Ltd. Aut 4134 289 2112 106 Data Communications Bureau 9443 253 45 67 Primus Telecommunications 4766 248 1506 155 Korea Internet Exchange for " 4814 212 79 14 China Telecom (Group) - Beiji 9583 176 32 5 Satyam Infoway Ltd., 17676 160 2482 27 XTAGE CORPORATION 9768 143 384 73 Korea Telecom 7657 129 22 87 The Internet Group Limited 9800 125 191 18 CHINA UNICOM 4780 123 186 39 Digital United Inc. 4713 115 1009 106 NTT Communications Corporatio 4739 111 56 102 Commerical Internet eXchange RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 940 2443 778 UUNET Technologies, Inc. 3301 396 924 346 TeliaNet Sweden 3352 277 535 29 Ibernet, Internet Access Netw 3215 266 628 166 France Telecom / &Equant 3320 254 1946 193 Deutsche Telekom AG 5515 245 783 172 Sonera Finland Autonomous Sys 680 233 2149 230 DFN-IP service G-WiN 1257 206 430 203 SWIPnet Swedish IP Network 5400 205 83 94 Concert European Core Network 719 189 306 128 LANLINK autonomous system 786 177 1873 177 The JANET IP Service 8708 139 23 136 Romania Data Systems S.A. 3303 137 547 136 Swisscom Ltd 2856 128 787 118 BTnet UK Regional network 12302 122 17 34 MobiFon S.A. 3269 113 690 68 TELECOM ITALIA 3246 112 317 107 Song Networks / Clinet 5511 109 192 87 France Telecom 3233 104 10 9 RNC - Romanian Natioanal R&D 2874 102 85 39 Global One Services AB ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 1852 9240 1378 UUNET Technologies, Inc. 7018 1294 7390 935 AT&T 3908 923 1643 501 Supernet, Inc. 1239 845 3355 660 Sprint 852 757 1175 451 Telus Advanced Communications 1 698 8075 447 GENUITY 7843 643 360 238 Adelphia Corp. 4323 626 438 257 Time Warner Communications, I 7132 579 659 133 Southwestern Bell Internet Se 7046 558 885 357 UUNET Technologies, Inc. 209 535 2010 347 Qwest 690 515 74 327 Merit Network 7066 482 203 252 Virginia Polytechnic Institut 7029 463 165 56 Alltel Information Services, 3549 440 839 316 Global Crossing 2149 438 180 332 Performance Systems, Inc. 2914 409 2100 386 Verio, Inc. 15290 379 297 194 AT&T Canada IES 6197 370 547 36 BellSouth Network Solutions, 6347 347 370 77 SAVVIS Communications Corpora Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 4538 466 448 China Education and Research 7132 579 446 Southwestern Bell Internet Se 3908 923 422 Supernet, Inc. 7029 463 407 Alltel Information Services, 7843 643 405 Adelphia Corp. 4323 626 369 Time Warner Communications, I 7018 1294 359 AT&T 1221 1257 358 Telstra Pty Ltd 6197 370 334 BellSouth Network Solutions, 852 757 306 Telus Advanced Communications 11371 292 286 Rhythms NetConnections 4151 287 271 USDA 6347 347 270 SAVVIS Communications Corpora 4355 308 256 EarthLink, Inc. 1 698 251 GENUITY 3352 277 248 Ibernet, Internet Access Netw 7066 482 230 Virginia Polytechnic Institut 18566 229 225 Covad Communications 4755 301 219 Videsh Sanchar Nigam Ltd. Aut 7303 273 211 Telecom Argentina Stet-France List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 55000 RESERVED 81.5.64.0/20 5467 MIPT-NET 65003 PRIVATE 202.92.84.0/24 9837 Powertel Ltd 65003 PRIVATE 202.92.84.0/22 9837 Powertel Ltd 65003 PRIVATE 202.92.85.0/24 9837 Powertel Ltd 65003 PRIVATE 202.92.119.0/24 9837 Powertel Ltd 65003 PRIVATE 203.56.32.0/24 9837 Powertel Ltd 65003 PRIVATE 203.56.33.0/24 9837 Powertel Ltd 5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies, Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 39.0.0.0/8 4554 Exchange Point Blocks 132.0.0.0/10 568 DISO-UNRRA 134.137.0.0/16 7170 AT&T Government Markets 135.0.0.0/13 10455 Lucent Technologies 137.0.0.0/13 568 DISO-UNRRA 138.94.0.0/16 1 GENUITY 158.0.0.0/13 568 DISO-UNRRA 164.233.0.0/16 6020 DISA NETWORK SERVICES 192.5.154.0/24 16588 Spider Web Hosting Solutions 192.44.0.0/19 702 UUNET Technologies, Inc. 192.72.0.0/18 4780 Digital United Inc. 192.72.0.0/16 4780 Digital United Inc. 192.83.16.0/20 5515 Sonera Finland Autonomous Sys 192.83.32.0/19 5515 Sonera Finland Autonomous Sys 192.83.96.0/22 5515 Sonera Finland Autonomous Sys 192.83.100.0/24 5515 Sonera Finland Autonomous Sys 192.91.198.0/24 2568 CTS Network Services 192.92.167.0/24 297 NASA Science Network 192.119.135.0/24 270 NASA 192.135.50.0/24 7018 AT&T 192.135.248.0/23 109 Cisco Systems, Inc. 192.136.79.0/24 719 LANLINK autonomous system 192.136.86.0/24 719 LANLINK autonomous system 192.136.87.0/24 719 LANLINK autonomous system 192.136.88.0/24 719 LANLINK autonomous system 192.139.62.0/24 6539 GT Group Telecom Services Cor 192.140.0.0/16 5511 France Telecom 192.152.213.0/24 1239 Sprint 192.153.136.0/21 568 DISO-UNRRA 192.156.0.0/19 568 DISO-UNRRA 192.172.0.0/19 568 DISO-UNRRA 192.195.253.0/24 237 Merit Network 192.208.29.0/24 3908 Supernet, Inc. 192.208.30.0/23 3908 Supernet, Inc. 192.243.36.0/23 7168 Northwest Link Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:19 /9:6 /10:7 /11:12 /12:36 /13:87 /14:233 /15:416 /16:7249 /17:1451 /18:2650 /19:7678 /20:7363 /21:5171 /22:7936 /23:9664 /24:63168 /25:204 /26:168 /27:86 /28:68 /29:45 /30:74 /31:0 /32:17 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 702 583 940 UUNET Technologies, Inc. 3908 510 923 Supernet, Inc. 701 507 1852 UUNET Technologies, Inc. 690 457 515 Merit Network 7843 449 643 Adelphia Corp. 7066 387 482 Virginia Polytechnic Institut 7029 366 463 Alltel Information Services, 7018 350 1294 AT&T 6197 256 370 BellSouth Network Solutions, 11371 245 292 Rhythms NetConnections 6198 238 310 BellSouth Network Solutions, 3301 234 396 TeliaNet Sweden 18566 225 229 Covad Communications 1239 217 845 Sprint 7046 215 558 UUNET Technologies, Inc. 209 211 535 Qwest 3352 201 277 Ibernet, Internet Access Netw 1580 200 213 HQ, 5th Signal Command 3215 199 266 France Telecom / &Equant 1 191 698 GENUITY Number of /24s announced per /8 block (Global) ---------------------------------------------- 4:3 9:1 12:504 13:10 15:2 17:6 20:3 24:798 25:1 32:41 38:9 40:6 44:1 57:13 61:277 62:221 63:1883 64:1258 65:1378 66:979 67:89 68:63 80:248 81:33 128:63 129:133 130:22 131:53 132:11 133:2 134:126 135:8 136:243 137:94 138:150 139:69 140:143 141:123 142:78 143:39 144:151 145:14 146:187 147:138 148:241 149:84 150:41 151:67 152:264 153:34 154:14 155:107 156:77 157:127 158:69 159:135 160:18 161:70 162:214 163:94 164:259 165:133 166:222 167:172 168:292 169:60 170:252 171:3 192:5456 193:2367 194:2093 195:905 196:410 198:3643 199:3192 200:2584 202:3313 203:4691 204:3281 205:2182 206:2686 207:2539 208:2647 209:2670 210:600 211:230 212:913 213:663 214:9 215:19 216:2854 217:471 218:27 End of report

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The Cidr Report
by CIDR Report 06 Jul '02

06 Jul '02

This is an auto-generated mail on Fri Jul 5 23:00:01 PDT 2002 It is not checked before it leaves my workstation. However, hopefully you will find this report interesting and will take the time to look through this to see if you can improve the amount of aggregation you perform. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report. NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for the regional version of this report. NEW: Check http://www.employees.org/~tbates/autnums.html for a complete list of autonomous system number to name mappings as used by the CIDR-Report. The report is split into sections: 0) General Status List the route table history for the last week, list any possibly bogus routes seen and give some status on ASes. 1) Gains by aggregating at the origin AS level This lists the "Top 30" players who if they decided to aggregate their announced classful prefixes at the origin AS level could make a significant difference in the reduction of the current size of the Internet routing table. This calculation does not take into account the inclusion of holes when forming an aggregate so it is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does give some indication of ASes participating in CIDR. Clearly, it is generally a good thing to see a large amount of withdrawls. 3) Interesting aggregates Interesting here means not an aggregate made as a set of classful routes. Thanks to GX Networks for giving me access to their routing tables once a day. Please send any comments about this report directly to CIDR Report <cidr-report(a)cisco.com>. ------------------------------------------------------------------------------ CIDR REPORT for 05Jul02 0) General Status Table History ------------- Date Prefixes 280602 111076 290602 111083 300602 111065 010702 111089 020702 111046 030702 110779 040702 110898 050702 110820 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- AS Summary ---------- Number of ASes in routing system: 13188 Number of ASes announcing only one prefix: 8046 (4527 cidr, 3519 classful) Largest number of cidr routes: 613 announced by AS701 Largest number of classful routes: 1234 announced by AS701 1) Gains by aggregating at the origin AS level --- 05Jul02 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1098 847 251 22.9% Telstra Pty Ltd AS701 1234 987 247 20.0% UUNET Technologies, Inc. AS17557 305 108 197 64.6% Pakistan Telecom AS6595 210 58 152 72.4% DoD Education Activity Network As AS852 482 352 130 27.0% Telus Advanced Communications AS7018 804 675 129 16.0% AT&T AS16473 194 76 118 60.8% Bell South AS4151 237 142 95 40.1% USDA AS19632 99 5 94 94.9% Metropolis Intercom S.A. AS1239 520 426 94 18.1% Sprint AS7303 157 69 88 56.1% Telecom Argentina Stet-France Tel AS16814 105 20 85 81.0% NSS, S.A. AS7046 313 230 83 26.5% UUNET Technologies, Inc. AS226 171 88 83 48.5% Los Nettos AS2048 180 103 77 42.8% State of Louisiana AS4755 212 136 76 35.8% Videsh Sanchar Nigam Ltd. Autonom AS577 262 190 72 27.5% Bell Advanced Communications Inc. AS4323 407 338 69 17.0% Time Warner Communications, Inc. AS724 229 161 68 29.7% DLA Systems Automation Center AS3464 163 102 61 37.4% Alabama SuperComputer Network AS19834 64 4 60 93.8% NetForce, Inc. AS10620 83 23 60 72.3% TVCABLE BOGOTA AS9498 84 27 57 67.9% BHARTI BT INTERNET LTD. AS16758 63 6 57 90.5% IKON Office Solutions AS1 441 384 57 12.9% GENUITY AS9051 82 26 56 68.3% INCONET Autonomous System AS3908 295 239 56 19.0% Supernet, Inc. AS209 309 255 54 17.5% Qwest AS6535 67 17 50 74.6% Chilesat Servicios Empresariales AS702 519 473 46 8.9% UUNET Technologies, Inc. Total 54644 42182 12462 22.8% For the rest of the previous weeks gain information please see http://www.employees.org:80/~tbates/cidr-report.html 2) Weekly Delta Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report 3) Interesting aggregates Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report

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