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August 2001

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The Cidr Report
by CIDR Report 04 Aug '01

04 Aug '01

This is an auto-generated mail on Fri Aug 3 23:00:00 PDT 2001 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 amont 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 03Aug01 0) General Status Table History ------------- Date Prefixes 270701 101541 280701 101451 290701 101356 300701 101504 310701 101910 010801 102050 020801 101595 030801 102236 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 67.0.0.0/16 from AS209 *** Bogus 82.104.0.0/16 from AS3269 *** Bogus 82.104.128.0/17 from AS3269 *** Bogus 82.105.0.0/16 from AS3269 *** Bogus 82.105.128.0/17 from AS3269 AS Summary ---------- Number of ASes in routing system: 11335 Number of ASes announcing only one prefix: 6741 (3853 cidr, 2888 classful) Largest number of cidr routes: 865 announced by AS701 Largest number of classful routes: 1411 announced by AS701 1) Gains by aggregating at the origin AS level --- 03Aug01 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS1221 1321 983 338 25.6% Telstra Pty Ltd AS701 1411 1196 215 15.2% UUNET Technologies, Inc. AS2551 639 515 124 19.4% ICG NetAhead, Inc AS4151 273 152 121 44.3% USDA AS4293 386 277 109 28.2% Cable & Wireless USA AS6595 161 57 104 64.6% DoD Education Activity Network As AS6429 204 103 101 49.5% AT&T Chile Internet S.A. AS13999 104 8 96 92.3% Mega Cable S.A. de C.V. AS705 228 136 92 40.4% UUNET Technologies, Inc. AS4755 209 118 91 43.5% Videsh Sanchar Nigam Ltd. Autonom AS7018 719 630 89 12.4% AT&T AS19632 95 10 85 89.5% Metropolis Intercom S.A. AS8013 301 219 82 27.2% PSINet Ltd. Canada AS577 248 175 73 29.4% Bell Advanced Communications Inc. AS724 230 158 72 31.3% DLA Systems Automation Center AS16473 135 63 72 53.3% Bell South AS7046 313 246 67 21.4% UUNET Technologies, Inc. AS6471 123 59 64 52.0% ENTEL CHILE S.A. AS3464 152 91 61 40.1% Alabama SuperComputer Network AS4200 122 62 60 49.2% Apex Global Information Services, AS1239 457 399 58 12.7% Sprint AS12302 90 32 58 64.4% MobiFon S.A. AS16758 63 6 57 90.5% IKON Office Solutions AS1 557 502 55 9.9% BBN Planet AS3908 207 153 54 26.1% Supernet, Inc. AS226 145 92 53 36.6% Los Nettos AS6413 65 13 52 80.0% Southern Online Systems, Inc. AS703 301 250 51 16.9% UUNET Technologies, Inc. AS17561 112 61 51 45.5% Internet service provision to Wes AS852 215 165 50 23.3% Telus Advanced Communications 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 Analysis 02 Aug '01

02 Aug '01

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 03 Aug, 2001 Analysis Summary ---------------- BGP routing table entries examined: 106454 Origin ASes present in the Internet Routing Table: 11411 Origin ASes announcing only one prefix: 4172 Transit ASes present in the Internet Routing Table: 1501 Average AS path length visible in the Internet Routing Table: 5.3 Max AS path length visible: 17 Illegal AS announcements present in the Routing Table: 49 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 21 Number of addresses announced to Internet: 1256502062 Equivalent to 74 /8s, 228 /16s and 179 /24s Percentage of available address space announced: 33.9 Percentage of allocated address space announced: 65.8 Percentage of available address space allocated: 51.5 Total number of prefixes smaller than registry allocations: 72717 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 15901 Prefixes being announced from the APNIC address blocks: 14321 APNIC Region origin ASes present in the Internet Routing Table: 1335 APNIC Region origin ASes announcing only one prefix: 453 APNIC Region transit ASes present in the Internet Routing Table: 223 Average APNIC Region AS path length visible: 5.1 Max APNIC Region AS path length visible: 14 Number of APNIC addresses announced to Internet: 75340213 Equivalent to 4 /8s, 125 /16s and 153 /24s Percentage of available APNIC address space announced: 74.1 APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239, 17408 - 18431 APNIC Address Blocks 61/8, 202/7, 210/7 and 218/8 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 73008 Prefixes being announced from the ARIN address blocks: 52892 ARIN Region origin ASes present in the Internet Routing Table: 6873 ARIN Region origin ASes announcing only one prefix: 2030 ARIN Region transit ASes present in the Internet Routing Table: 700 Average ARIN Region AS path length visible: 5.2 Max ARIN Region AS path length visible: 17 Number of ARIN addresses announced to Internet: 201006598 Equivalent to 11 /8s, 251 /16s and 30 /24s Percentage of available ARIN address space announced: 79.9 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 - 22527 ARIN Address Blocks 24/8, 63/8, 64/6, 199/8, 200/8, 204/6, 208/7 and 216/8 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 17542 Prefixes being announced from the RIPE address blocks: 13622 RIPE Region origin ASes present in the Internet Routing Table: 3210 RIPE Region origin ASes announcing only one prefix: 1689 RIPE Region transit ASes present in the Internet Routing Table: 579 Average RIPE Region AS path length visible: 5.8 Max RIPE Region AS path length visible: 15 Number of RIPE addresses announced to Internet: 102604495 Equivalent to 6 /8s, 29 /16s and 158 /24s Percentage of available RIPE address space announced: 68.0 RIPE AS Blocks 1877 - 1901, 2042, 2047, 2107 - 2136, 2585 - 2614 2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631 6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383 20480 - 21503 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 Description 1221 1670 1330 Telstra Pty Ltd 2764 440 362 connect.com.au pty ltd 703 406 367 UUNET Technologies, Inc. 2907 366 1768 SINET Japan 4755 289 162 Videsh Sanchar Nigam Ltd. Aut 7474 243 292 Optus Communications Pty Ltd 4134 239 1714 Data Communications Bureau 4740 216 27 OzEmail ISP 7539 209 175 TANet2, sponsored by NSC, TAI 4766 176 1336 Korea Internet Exchange for " 7545 149 27 TPG Internet Pty Ltd 9443 145 40 Primus Telecommunications 4786 130 17 NetConnect Communications Pty 4763 121 69 Telstra New Zealand 4713 115 886 NTT Communications Corporatio 17561 115 151 Internet service provision to 7586 112 17 Paradox Digital Pty Ltd 4812 111 279 China Telecom (Group) 7657 110 22 The Internet Group Limited 9583 110 61 Satyam Infoway Ltd., RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv Description 702 691 1794 UUNET Technologies, Inc. 3301 429 917 TeliaNet Sweden 15870 412 12 Global Center Frankfurt 1257 280 521 SWIPnet Swedish IP Network 1270 241 868 UUNET Germany 3215 232 497 France Telecom / &Equant 680 229 2069 DFN-IP service G-WiN 15878 205 8 Global Center Paris 719 185 291 LANLINK autonomous system 786 180 1858 The JANET IP Service 3320 179 1428 Deutsche Telekom AG 5515 175 654 Sonera Finland Autonomous Sys 8708 155 15 Romania Data Systems S.A. 5400 140 67 Concert European Core Network 3303 131 576 Swisscom Ltd 2856 126 776 BTnet UK Regional network 5549 121 66 Nextra Deutschland GmbH + Co. 517 119 271 KPNQwest Germany GmbH 8503 110 3 PCNET - PCNET DATA Network 1267 107 1989 Infostrada S.p.A. ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv Description 701 2312 8113 UUNET Technologies, Inc. 7018 969 7014 AT&T 1 894 8683 BBN Planet 7046 764 1040 UUNET Technologies, Inc. 1239 695 3248 Sprint 2551 674 648 ICG NetAhead, Inc 2914 512 2299 Verio, Inc. 690 502 93 Merit Network 4293 486 98 Cable & Wireless USA 209 470 1899 Qwest 3561 423 2397 Cable & Wireless USA 3908 422 488 Supernet, Inc. 2548 403 1010 Business Internet, Inc. 2149 399 329 Performance Systems, Inc. 18994 390 10 Global Crossing 3549 358 818 Global Crossing 4323 344 318 Time Warner Communications, I 11371 338 100 Rhythms NetConnections 15290 337 357 AT&T Canada IES 3967 334 454 Exodus Communication Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv Description 701 2312 8113 UUNET Technologies, Inc. 1221 1670 1330 Telstra Pty Ltd 7018 969 7014 AT&T 1 894 8683 BBN Planet 7046 764 1040 UUNET Technologies, Inc. 1239 695 3248 Sprint 702 691 1794 UUNET Technologies, Inc. 2551 674 648 ICG NetAhead, Inc 2914 512 2299 Verio, Inc. 690 502 93 Merit Network 4293 486 98 Cable & Wireless USA 209 470 1899 Qwest 2764 440 362 connect.com.au pty ltd 3301 429 917 TeliaNet Sweden 3561 423 2397 Cable & Wireless USA 3908 422 488 Supernet, Inc. 15870 412 12 Global Center Frankfurt 703 406 367 UUNET Technologies, Inc. 2548 403 1010 Business Internet, Inc. 2149 399 329 Performance Systems, Inc. List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 6971 UNALLOCATED 64.42.0.0/18 2516 Kokusai Denshin Denw 6971 UNALLOCATED 64.42.0.0/17 2516 Kokusai Denshin Denw 6971 UNALLOCATED 64.42.40.0/21 2516 Kokusai Denshin Denw 6971 UNALLOCATED 64.42.48.0/21 2914 Verio, Inc. 6971 UNALLOCATED 64.42.60.0/22 2914 Verio, Inc. 6971 UNALLOCATED 64.42.72.0/21 2914 Verio, Inc. 6971 UNALLOCATED 64.42.108.0/22 2914 Verio, Inc. 6971 UNALLOCATED 64.42.112.0/20 2914 Verio, Inc. 6971 UNALLOCATED 64.87.64.0/19 2516 Kokusai Denshin Denw 65501 PRIVATE 64.243.116.0/24 16890 K&G Network Services 6971 UNALLOCATED 192.103.229.0/24 2516 Kokusai Denshin Denw 6971 UNALLOCATED 192.103.230.0/23 2516 Kokusai Denshin Denw 6971 UNALLOCATED 192.103.232.0/22 2516 Kokusai Denshin Denw 6971 UNALLOCATED 192.103.236.0/23 2516 Kokusai Denshin Denw 6971 UNALLOCATED 192.103.237.0/24 2516 Kokusai Denshin Denw 1877 UNALLOCATED 192.108.196.0/24 1800 SPRINT 1877 UNALLOCATED 192.108.213.16/28 1880 Stupi, house man's p 1877 UNALLOCATED 192.108.214.0/24 1800 SPRINT 65460 PRIVATE 192.231.11.0/24 7018 AT&T 6971 UNALLOCATED 199.249.223.0/24 2516 Kokusai Denshin Denw 9501 UNALLOCATED 202.53.96.0/24 17443 International Intern 9501 UNALLOCATED 202.53.96.0/20 17443 International Intern 9501 UNALLOCATED 202.53.97.0/24 17443 International Intern 9501 UNALLOCATED 202.53.98.0/24 17443 International Intern 9501 UNALLOCATED 202.53.99.0/24 17443 International Intern 9501 UNALLOCATED 202.53.100.0/24 17443 International Intern 9501 UNALLOCATED 202.53.101.0/24 17443 International Intern 9501 UNALLOCATED 202.53.102.0/24 17443 International Intern 4834 UNALLOCATED 202.74.192.0/20 4648 Netgate 17657 UNALLOCATED 202.161.160.0/20 9653 Transit link for Hon 4831 UNALLOCATED 202.172.32.0/20 9740 Cable & Wireless Net 6971 UNALLOCATED 206.58.248.0/22 2516 Kokusai Denshin Denw 6971 UNALLOCATED 206.58.248.0/21 2516 Kokusai Denshin Denw 6971 UNALLOCATED 206.58.254.0/23 2914 Verio, Inc. 5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies, 65515 PRIVATE 212.110.142.0/24 5593 CRIS-AS 6971 UNALLOCATED 216.105.192.0/20 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.121.224.0/19 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.174.192.0/21 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.174.192.0/18 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.174.200.0/23 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.174.202.0/23 2914 Verio, Inc. 6971 UNALLOCATED 216.174.204.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.174.208.0/20 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.174.232.0/21 2914 Verio, Inc. 6971 UNALLOCATED 216.174.240.0/22 2914 Verio, Inc. 6971 UNALLOCATED 216.210.128.0/18 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.210.128.0/17 2516 Kokusai Denshin Denw 6971 UNALLOCATED 216.229.96.0/20 2516 Kokusai Denshin Denw Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 82.104.0.0/16 3269 TELECOM ITALIA 82.104.128.0/17 3269 TELECOM ITALIA 82.105.0.0/16 3269 TELECOM ITALIA 82.105.128.0/17 3269 TELECOM ITALIA 99.0.0.0/8 9638 National Agricultural Coopera 128.65.0.0/16 3463 ACES Research Inc 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 BBN Planet 144.7.0.0/16 701 UUNET Technologies, Inc. 153.34.0.0/15 701 UUNET Technologies, Inc. 153.36.0.0/14 701 UUNET Technologies, Inc. 154.150.0.0/16 6494 IDCI 158.0.0.0/13 568 DISO-UNRRA 164.233.0.0/16 6020 DISA NETWORK SERVICES 172.32.1.0/25 1221 Telstra Pty Ltd 172.122.0.0/16 701 UUNET Technologies, Inc. 201.115.100.0/24 7018 AT&T 220.2.228.0/24 3758 SingNet Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:20 /9:6 /10:6 /11:9 /12:32 /13:82 /14:217 /15:366 /16:6932 /17:1195 /18:2264 /19:6784 /20:5529 /21:4590 /22:6825 /23:8604 /24:60659 /25:321 /26:401 /27:419 /28:428 /29:349 /30:322 /31:0 /32:94 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 1221 1518 1670 Telstra Pty Ltd 701 1448 2312 UUNET Technologies, Inc. 7046 601 764 UUNET Technologies, Inc. 2551 567 674 ICG NetAhead, Inc 690 498 502 Merit Network 7018 489 969 AT&T 4293 469 486 Cable & Wireless USA 702 439 691 UUNET Technologies, Inc. 1 421 894 BBN Planet 15870 408 412 Global Center Frankfurt 2764 395 440 connect.com.au pty ltd 18994 388 390 Global Crossing 1239 379 695 Sprint 209 345 470 Qwest 703 336 406 UUNET Technologies, Inc. 3908 327 422 Supernet, Inc. 11371 325 338 Rhythms NetConnections 18993 305 309 Global Crossing 4323 295 344 Time Warner Communications, I 2548 293 403 Business Internet, Inc. Advertised prefixes smaller than registry allocations (per /8 block) -------------------------------------------------------------------- 4:2 6:12 9:6 12:589 13:13 15:11 17:13 20:7 24:861 25:2 26:1 32:43 35:2 38:20 40:3 43:6 44:10 45:2 47:40 52:2 53:4 55:1 56:5 57:15 61:155 62:199 63:2511 64:2746 65:999 66:818 80:50 128:64 129:178 130:54 131:68 132:41 133:1 134:246 135:11 136:37 137:182 138:233 139:92 140:259 141:224 142:119 143:86 144:210 145:33 146:202 147:178 148:255 149:127 150:62 151:262 152:941 153:38 154:26 155:142 156:93 157:164 158:115 159:83 160:101 161:145 162:150 163:254 164:212 165:256 166:261 167:171 168:209 169:55 170:425 171:20 172:1 192:38 193:2635 194:2755 195:1114 196:4 198:8 199:4079 200:2908 202:3833 203:5857 204:4447 205:2988 206:4218 207:3746 208:5205 209:4435 210:804 211:342 212:1132 213:733 216:4728 217:473 218:3 End of report

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