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February 2003

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The Cidr Report
by cidr-report＠potaroo.net 07 Feb '03

07 Feb '03

This report has been generated at Fri Feb 7 21:46:10 2003 AEST. The report analyses the BGP Routing Table of an AS4637 (Reach) router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org/as4637 for a current version of this report. Recent Table History Date Prefixes CIDR Agg 31-01-03 118463 85095 01-02-03 118556 85054 02-02-03 118567 85128 03-02-03 118587 85148 04-02-03 118588 85028 05-02-03 118502 85128 06-02-03 118561 85108 07-02-03 118526 85124 AS Summary 14519 Number of ASes in routing system 5722 Number of ASes announcing only one prefix 1584 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 72916992 Largest address span announced by an AS (/32s) AS568 : SUMNET-AS DISO-UNRRA Aggregation Summary The algorithm used in this report proposes aggregation only when there is a precise match using the AS path, so as to preserve traffic transit policies. Aggregation is also proposed across non-advertised address space ('holes'). --- 07Feb03 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 118612 85169 33443 28.2% All ASes AS3908 1058 579 479 45.3% SUPERNETASBLK SuperNet, Inc. AS18566 457 7 450 98.5% COVAD Covad Communications AS701 1584 1171 413 26.1% ALTERNET-AS UUNET Technologies, Inc. AS7018 1433 1041 392 27.4% ATT-INTERNET4 AT&T WorldNet Services AS4323 528 170 358 67.8% TW-COMM Time Warner Communications, Inc. AS6197 472 154 318 67.4% BATI-ATL BellSouth Network Solutions, Inc AS7843 568 253 315 55.5% ADELPHIA-AS Adelphia Corp. AS1221 1133 829 304 26.8% ASN-TELSTRA Telstra Pty Ltd AS1239 964 678 286 29.7% SPRINTLINK Sprint AS7046 563 280 283 50.3% UUNET-CUSTOMER UUNET Technologies, Inc. AS6347 367 85 282 76.8% DIAMOND SAVVIS Communications Corporation AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS4355 396 120 276 69.7% ERMS-EARTHLNK EARTHLINK, INC AS4151 345 71 274 79.4% USDA-1 USDA AS705 437 189 248 56.8% ASN-ALTERNET UUNET Technologies, Inc. AS4814 261 15 246 94.3% CHINANET-BEIJING-AP China Telecom (Group) AS852 680 444 236 34.7% ASN852 Telus Advanced Communications AS6198 432 201 231 53.5% BATI-MIA BellSouth Network Solutions, Inc AS1 665 435 230 34.6% GNTY-1 Genuity AS22291 238 31 207 87.0% CHARTER-LA Charter Communications AS17676 222 26 196 88.3% GIGAINFRA XTAGE CORPORATION AS209 532 341 191 35.9% ASN-QWEST Qwest AS690 498 308 190 38.2% MERIT-AS-27 Merit Network Inc. AS4134 301 117 184 61.1% ERX-CHINALINK Data Communications Bureau AS2386 437 263 174 39.8% INS-AS AT&T Data Communications Services AS2048 259 87 172 66.4% LANET-1 State of Louisiana AS17557 336 186 150 44.6% PKTELECOM-AS-AP Pakistan Telecom AS6140 284 135 149 52.5% IMPSAT-USA ImpSat AS6327 186 40 146 78.5% SHAWFIBER Shaw Fiberlink Limited AS11492 307 164 143 46.6% CABLEONE CABLE ONE Total 16238 8434 7804 48.1% Top 30 total Please see http://www.cidr-report.org for the full report ------------------------------------ Copies of this report are mailed to: nanog(a)merit.edu eof-list(a)ripe.net apops(a)lists.apnic.net routing-wg(a)ripe.net afnog(a)afnog.org

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Weekly Routing Table Report
by Routing Table Analysis 07 Feb '03

07 Feb '03

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 07 Feb, 2003 Analysis Summary ---------------- BGP routing table entries examined: 120515 Prefixes after maximum aggregation: 76991 Unique aggregates announced to Internet: 58099 Total ASes present in the Internet Routing Table: 14573 Origin-only ASes present in the Internet Routing Table: 12648 Origin ASes announcing only one prefix: 5720 Transit ASes present in the Internet Routing Table: 1925 Transit-only ASes present in the Internet Routing Table: 66 Average AS path length visible in the Internet Routing Table: 5.4 Max AS path length visible: 17 Illegal AS announcements present in the Routing Table: 12 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 22 Number of addresses announced to Internet: 1192008781 Equivalent to 71 /8s, 12 /16s and 156 /24s Percentage of available address space announced: 32.2 Percentage of allocated address space announced: 58.4 Percentage of available address space allocated: 55.0 Total number of prefixes smaller than registry allocations: 56029 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 20318 Total APNIC prefixes after maximum aggregation: 11996 Prefixes being announced from the APNIC address blocks: 18835 Unique aggregates announced from the APNIC address blocks: 11533 APNIC Region origin ASes present in the Internet Routing Table: 1729 APNIC Region origin ASes announcing only one prefix: 525 APNIC Region transit ASes present in the Internet Routing Table: 295 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 14 Number of APNIC addresses announced to Internet: 105059232 Equivalent to 6 /8s, 67 /16s and 19 /24s Percentage of available APNIC address space announced: 69.1 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: 74212 Total ARIN prefixes after maximum aggregation: 47457 Prefixes being announced from the ARIN address blocks: 52586 Unique aggregates announced from the ARIN address blocks: 16200 ARIN Region origin ASes present in the Internet Routing Table: 8120 ARIN Region origin ASes announcing only one prefix: 2741 ARIN Region transit ASes present in the Internet Routing Table: 766 Average ARIN Region AS path length visible: 5.2 Max ARIN Region AS path length visible: 17 Number of ARIN addresses announced to Internet: 186593984 Equivalent to 11 /8s, 31 /16s and 50 /24s Percentage of available ARIN address space announced: 69.5 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 - 26591, 26624 - 27647 ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7 and 216/8 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 20729 Total RIPE prefixes after maximum aggregation: 15341 Prefixes being announced from the RIPE address blocks: 17370 Unique aggregates announced from the RIPE address blocks: 11605 RIPE Region origin ASes present in the Internet Routing Table: 4331 RIPE Region origin ASes announcing only one prefix: 2369 RIPE Region transit ASes present in the Internet Routing Table: 784 Average RIPE Region AS path length visible: 5.7 Max RIPE Region AS path length visible: 17 Number of RIPE addresses announced to Internet: 123149248 Equivalent to 7 /8s, 87 /16s and 27 /24s Percentage of available RIPE address space announced: 73.4 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, 28672 - 29695 RIPE Address Blocks 62/8, 80/7, 82/8, 188/8, 193/8, 194/7, 212/7 and 217/8 LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 5246 Total LACNIC prefixes after maximum aggregation: 2197 Prefixes being announced from the LACNIC address blocks: 4596 Unique aggregates announced from the LACNIC address blocks: 2990 LACNIC Region origin ASes present in the Internet Routing Table: 329 LACNIC Region origin ASes announcing only one prefix: 85 LACNIC Region transit ASes present in the Internet Routing Table: 68 Average LACNIC Region AS path length visible: 5.8 Max LACNIC Region AS path length visible: 10 Number of LACNIC addresses announced to Internet: 11979776 Equivalent to 0 /8s, 182 /16s and 204 /24s Percentage of available LACNIC address space announced: 71.4 LACNIC AS Blocks 26592 - 26623, 27648 - 28671 LACNIC Address Blocks 200/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1126 1183 822 Telstra Pty Ltd 703 409 368 320 UUNET 2907 388 1975 367 SINET Japan 17557 336 24 133 Pakistan Telecom 2764 331 340 300 connect.com.au pty ltd 7474 302 276 210 Optus Communications Pty Ltd 4134 301 2525 100 Data Communications Bureau 4814 261 79 15 China Telecom (Group) 4755 249 134 76 Videsh Sanchar Nigam Ltd. Aut 3786 241 775 207 DACOM Corporation 17676 223 3461 25 XTAGE CORPORATION 9583 213 33 13 Satyam Infoway Ltd., 4766 199 2071 148 Korea Internet Exchange for " 9443 185 57 76 Primus Telecommunications 9800 167 205 41 CHINA UNICOM 4765 148 9 13 World Net & Services Co., Ltd 9238 131 8 18 TATA ISP 9768 130 384 64 Korea Telecom 4716 129 737 123 TTnet 4739 124 57 113 Commerical Internet eXchange ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 1607 8936 1183 UUNET Technologies, Inc. 7018 1433 7108 972 AT&T 3908 1219 1602 492 Supernet, Inc. 1239 965 3142 676 Sprint 852 684 1107 445 Telus Advanced Communications 1 669 8092 434 GENUITY 7843 569 393 229 Adelphia Corp. 7046 563 818 252 UUNET Technologies, Inc. 209 531 2105 338 Qwest 4323 529 472 168 Time Warner Communications, I 690 498 73 308 Merit Network 7066 492 204 253 Virginia Polytechnic Institut 6197 472 555 110 BellSouth Network Solutions, 18566 458 114 7 Covad Communications 705 438 150 189 UUNET Technologies, Inc. 2386 437 469 236 AT&T Data Communications Serv 3561 435 2227 371 Cable & Wireless USA 6198 430 191 197 BellSouth Network Solutions, 4355 397 309 114 EarthLink, Inc. 3549 392 708 289 Global Crossing RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 799 2284 663 UUNET - Commercial IP service 3215 312 818 172 France Telecom Transpac 3301 312 1141 300 TeliaNet Sweden 3320 261 1995 224 Deutsche Telekom AG 680 240 2166 237 DFN-IP service G-WiN 1257 212 384 197 SWIPnet Swedish IP Network 5515 208 783 172 Sonera Solution Autonomous Sy 719 204 306 130 LANLINK autonomous system 786 179 1874 179 The JANET IP Service 5400 158 69 95 BT Ignite European Backbone 8708 156 42 147 Romania Data Systems S.A. 20858 147 17 3 This AS will be used to conne 3303 144 517 143 Swisscom Ltd 12302 124 18 31 MobiFon S.A. 8220 123 174 114 COLT Internet - International 2856 119 1299 109 BTnet UK Regional network 3246 118 378 115 Song Networks 3269 111 751 61 TELECOM ITALIA 3233 104 10 8 RNC - Romanian Natioanal R&D 5511 101 177 80 France Telecom LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 6140 284 98 103 ImpSat 7303 232 36 54 Telecom Argentina Stet-France 8151 209 332 115 UniNet S.A. de C.V. 11172 157 82 33 Servicios Alestra S.A de C.V 6503 156 191 109 AVANTEL, S.A. 16814 140 9 14 NSS, S.A. 13999 127 36 8 Mega Cable S.A. de C.V. 11340 111 3 39 Red Universitaria Nacional 10620 106 7 32 TVCABLE BOGOTA 6147 79 62 21 Telefonica Del Peru 1916 74 306 44 Fundacao de Amparo a Pesquisa 6535 71 4 22 Chilesat Servicios Empresari 15311 71 27 36 Telefonica Empresas 4270 69 18 10 Red de Interconexion Universi 8065 69 6 15 Empresas Publicas de Medellin 11992 69 7 30 Integrated Systems 7080 64 4 1 Electronica y Comunicaciones 7984 60 11 39 Global One Colombia 11830 60 4 21 Instituto Costarricense de El 15034 60 5 31 TIBA SA Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 3908 1219 727 Supernet, Inc. 7018 1433 461 AT&T 18566 458 451 Covad Communications 6197 472 362 BellSouth Network Solutions, 4323 529 361 Time Warner Communications, I 7843 569 340 Adelphia Corp. 7046 563 311 UUNET Technologies, Inc. 11492 307 306 Cable One 1221 1126 304 Telstra Pty Ltd 1239 965 289 Sprint 6347 368 289 SAVVIS Communications Corpora 4151 345 287 USDA 4355 397 283 EarthLink, Inc. 22927 295 281 TELEFONICA DE ARGENTINA 705 438 249 UUNET Technologies, Inc. 4814 261 246 China Telecom (Group) 376 352 241 Reseau Interordinateurs Scien 852 684 239 Telus Advanced Communications 7066 492 239 Virginia Polytechnic Institut 1 669 235 GENUITY List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p 64521 PRIVATE 198.189.23.0/24 2151 California State Uni 64521 PRIVATE 198.189.24.0/24 2151 California State Uni 64524 PRIVATE 198.189.134.0/24 2151 California State Uni 64524 PRIVATE 198.189.135.0/24 2151 California State Uni 64524 PRIVATE 198.189.136.0/24 2151 California State Uni 64524 PRIVATE 198.189.137.0/24 2151 California State Uni 64524 PRIVATE 198.189.138.0/24 2151 California State Uni 64521 PRIVATE 198.189.158.0/24 2151 California State Uni 64521 PRIVATE 198.189.235.0/24 2151 California State Uni 64521 PRIVATE 198.189.236.0/24 2151 California State Uni 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 135.0.0.0/13 10455 Lucent Technologies 137.0.0.0/13 568 DISO-UNRRA 158.0.0.0/13 568 DISO-UNRRA 192.31.242.0/24 771 NASA Ames Research Center 192.44.0.0/19 702 UUNET - Commercial IP service 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 192.119.135.0/24 270 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 192.153.136.0/21 568 DISO-UNRRA 192.156.164.0/24 19548 Adelphia Business Solutions 192.172.0.0/19 568 DISO-UNRRA 192.243.36.0/23 2044 AUSNet, Inc. Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:17 /9:3 /10:8 /11:12 /12:44 /13:92 /14:241 /15:439 /16:7322 /17:1568 /18:2867 /19:8061 /20:7954 /21:5715 /22:8654 /23:10406 /24:66379 /25:172 /26:177 /27:94 /28:82 /29:58 /30:100 /31:2 /32:48 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 3908 796 1219 Supernet, Inc. 7018 515 1433 AT&T 702 494 799 UUNET - Commercial IP service 18566 453 458 Covad Communications 690 447 498 Merit Network 701 427 1607 UUNET Technologies, Inc. 7066 391 492 Virginia Polytechnic Institut 1239 357 965 Sprint 6197 351 472 BellSouth Network Solutions, 7843 345 569 Adelphia Corp. 6198 341 430 BellSouth Network Solutions, 11492 306 307 Cable One 22927 294 295 TELEFONICA DE ARGENTINA 6140 272 284 ImpSat 7046 265 563 UUNET Technologies, Inc. 2386 239 437 AT&T Data Communications Serv 3215 238 312 France Telecom Transpac 20115 236 357 Charter Communications 7303 231 232 Telecom Argentina Stet-France 4355 224 397 EarthLink, Inc. Number of /24s announced per /8 block (Global) ---------------------------------------------- 12:638 13:1 15:6 17:2 20:9 24:799 25:1 32:82 34:1 38:40 40:19 44:1 55:1 57:15 61:473 62:495 63:1898 64:1395 65:1850 66:1388 67:211 68:255 69:42 80:314 81:86 128:141 129:185 130:38 131:73 132:11 133:2 134:143 135:4 136:194 137:114 138:103 139:70 140:130 141:104 142:92 143:45 144:63 145:17 146:259 147:85 148:261 149:75 150:41 151:96 152:254 153:44 154:3 155:104 156:39 157:44 158:123 159:137 160:32 161:50 162:135 163:80 164:268 165:141 166:86 167:305 168:392 169:57 170:294 171:8 192:5353 193:2418 194:2004 195:932 196:453 198:3605 199:3054 200:2846 202:3627 203:5062 204:3023 205:2097 206:2389 207:2412 208:2705 209:2795 210:711 211:321 212:941 213:712 214:22 215:21 216:3212 217:561 218:76 219:18 220:45 End of report

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