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The Cidr Report
by cidr-report＠potaroo.net 11 Oct '02

11 Oct '02

This report has been generated at Fri Oct 11 21:45:36 2002 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 04-10-02 114025 82170 05-10-02 114135 82280 06-10-02 114325 82318 07-10-02 114398 82256 08-10-02 114434 82620 09-10-02 114687 82510 10-10-02 114415 82589 11-10-02 114611 82621 Possible Bogus Routes 192.0.0.0/24 AS3215 AS3215 France Telecom Transpac AS Summary 13857 Number of ASes in routing system 5394 Number of ASes announcing only one prefix 1762 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 73081088 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'). --- 11Oct02 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 114736 82545 32191 28.1% All ASes AS4637 703 119 584 83.1% REACH Reach Network Border AS AS7132 594 71 523 88.0% SBIS-AS Southwestern Bell Internet Services AS3908 1036 533 503 48.6% SUPERNETASBLK SuperNet, Inc. AS701 1762 1277 485 27.5% ALTERNET-AS UUNET Technologies, Inc. AS7843 721 327 394 54.6% ADELPHIA-AS Adelphia Corp. AS7018 1349 992 357 26.5% ATT-INTERNET4 AT&T WorldNet Services AS4323 519 182 337 64.9% TW-COMM Time Warner Communications, Inc. AS1221 1206 886 320 26.5% ASN-TELSTRA Telstra Pty Ltd AS18566 298 4 294 98.7% COVAD Covad Communications AS852 736 457 279 37.9% ASN852 Telus Advanced Communications AS6347 342 77 265 77.5% DIAMOND SAVVIS Communications Corporation AS4151 292 37 255 87.3% USDA-1 USDA AS6197 392 140 252 64.3% BATI-ATL BellSouth Network Solutions, Inc AS4355 370 126 244 65.9% ERMS-EARTHLNK EARTHLINK, INC AS7046 574 337 237 41.3% UUNET-CUSTOMER UUNET Technologies, Inc. AS209 573 337 236 41.2% ASN-QWEST Qwest AS1239 874 655 219 25.1% SprintLink Sprint AS1 652 437 215 33.0% GNTY-1 Genuity AS4814 225 15 210 93.3% CHINANET-BEIJING-AP China Telecom (Group)Beijing Telecom CompanyBeijing China AS705 409 201 208 50.9% ASN-ALTERNET UUNET Technologies, Inc. AS22927 215 20 195 90.7% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS6595 248 57 191 77.0% DODDSEUR DoD Education Activity Network Assistance Center AS17676 224 34 190 84.8% GIGAINFRA APNIC ASN block AS690 518 329 189 36.5% NSFNET-T3-RT-AS Merit Network Inc. AS4134 293 111 182 62.1% ERX-CHINALINK Data Communications Bureau AS17557 293 115 178 60.8% PKTELECOM-AS-AP APNIC ASN block AS6198 396 221 175 44.2% BATI-MIA BellSouth Network Solutions, Inc AS2048 262 89 173 66.0% LANET-1 State of Louisiana AS2548 438 270 168 38.4% ICIX-MD-AS Business Internet, Inc. AS174 298 133 165 55.4% PSINET PSINet Inc. Total 16812 8589 8223 48.9% 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 11 Oct '02

11 Oct '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 11 Oct, 2002 Analysis Summary ---------------- BGP routing table entries examined: 116047 Prefixes after maximum aggregation: 74594 Unique aggregates announced to Internet: 55369 Total ASes present in the Internet Routing Table: 13890 Origin-only ASes present in the Internet Routing Table: 12024 Origin ASes announcing only one prefix: 5384 Transit ASes present in the Internet Routing Table: 1866 Transit-only ASes present in the Internet Routing Table: 57 Average AS path length visible in the Internet Routing Table: 5.3 Max AS path length visible: 18 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: 35 Number of addresses announced to Internet: 1191976840 Equivalent to 71 /8s, 12 /16s and 31 /24s Percentage of available address space announced: 32.2 Percentage of allocated address space announced: 58.9 Percentage of available address space allocated: 54.6 Total number of prefixes smaller than registry allocations: 48282 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 18882 Total APNIC prefixes after maximum aggregation: 11416 Prefixes being announced from the APNIC address blocks: 17387 Unique aggregates announced from the APNIC address blocks: 11010 APNIC Region origin ASes present in the Internet Routing Table: 1618 APNIC Region origin ASes announcing only one prefix: 516 APNIC Region transit ASes present in the Internet Routing Table: 279 Average APNIC Region AS path length visible: 5.2 Max APNIC Region AS path length visible: 12 Number of APNIC addresses announced to Internet: 98137504 Equivalent to 5 /8s, 217 /16s and 117 /24s Percentage of available APNIC address space announced: 64.5 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: 72702 Total ARIN prefixes after maximum aggregation: 46189 Prefixes being announced from the ARIN address blocks: 50871 Unique aggregates announced from the ARIN address blocks: 15355 ARIN Region origin ASes present in the Internet Routing Table: 7815 ARIN Region origin ASes announcing only one prefix: 2579 ARIN Region transit ASes present in the Internet Routing Table: 749 Average ARIN Region AS path length visible: 5.2 Max ARIN Region AS path length visible: 14 Number of ARIN addresses announced to Internet: 181456224 Equivalent to 10 /8s, 208 /16s and 205 /24s Percentage of available ARIN address space announced: 67.6 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: 19796 Total RIPE prefixes after maximum aggregation: 14934 Prefixes being announced from the RIPE address blocks: 16469 Unique aggregates announced from the RIPE address blocks: 10874 RIPE Region origin ASes present in the Internet Routing Table: 4085 RIPE Region origin ASes announcing only one prefix: 2208 RIPE Region transit ASes present in the Internet Routing Table: 760 Average RIPE Region AS path length visible: 5.8 Max RIPE Region AS path length visible: 18 Number of RIPE addresses announced to Internet: 115789696 Equivalent to 6 /8s, 230 /16s and 207 /24s Percentage of available RIPE address space announced: 76.7 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 LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 4667 Total LACNIC prefixes after maximum aggregation: 2055 Prefixes being announced from the LACNIC address blocks: 4107 Unique aggregates announced from the LACNIC address blocks: 2612 LACNIC Region origin ASes present in the Internet Routing Table: 315 LACNIC Region origin ASes announcing only one prefix: 81 LACNIC Region transit ASes present in the Internet Routing Table: 66 Average LACNIC Region AS path length visible: 6.0 Max LACNIC Region AS path length visible: 17 Number of LACNIC addresses announced to Internet: 11408640 Equivalent to 0 /8s, 174 /16s and 21 /24s Percentage of available LACNIC address space announced: 68.0 LACNIC AS Blocks 26592 - 26623 LACNIC Address Blocks 200/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1198 1187 878 Telstra Pty Ltd 703 396 368 312 UUNET 2907 361 1831 341 SINET Japan 2764 343 356 315 connect.com.au pty ltd 7474 302 275 206 Optus Communications Pty Ltd 4134 293 2268 95 Data Communications Bureau 17557 292 21 113 Pakistan Telecom 4755 271 139 74 Videsh Sanchar Nigam Ltd. Aut 4766 249 1808 157 Korea Internet Exchange for " 4814 225 79 15 China Telecom (Group) 17676 224 3506 31 XTAGE CORPORATION 9443 185 57 72 Primus Telecommunications 9583 174 32 5 Satyam Infoway Ltd., 4515 136 102 77 Star Internet Services Ltd. 9768 134 385 73 Korea Telecom 4716 128 736 122 TTnet 7657 127 22 84 The Internet Group Limited 9800 122 188 24 CHINA UNICOM 4739 117 56 108 Commerical Internet eXchange 4713 115 1049 104 NTT Communications Corporatio ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 1785 9199 1279 UUNET Technologies, Inc. 7018 1344 7180 935 AT&T 3908 1051 1651 505 Supernet, Inc. 1239 877 3186 655 Sprint 852 736 1145 456 Telus Advanced Communications 7843 722 371 308 Adelphia Corp. 1 659 8060 437 GENUITY 7132 594 672 69 Southwestern Bell Internet Se 7046 578 878 303 UUNET Technologies, Inc. 209 577 2064 335 Qwest 4323 519 439 165 Time Warner Communications, I 690 518 75 325 Merit Network 7066 490 204 257 Virginia Polytechnic Institut 2548 438 1118 270 Business Internet, Inc. 705 411 130 201 UUNET Technologies, Inc. 3549 407 725 293 Global Crossing 6198 395 180 195 BellSouth Network Solutions, 6197 392 601 40 BellSouth Network Solutions, 4355 379 292 104 EarthLink, Inc. 2914 369 2027 362 Verio, Inc. RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 910 2407 727 UUNET - Commercial IP service 3301 381 1164 337 TeliaNet Sweden 3215 296 677 172 France Telecom Transpac 3320 243 1966 220 Deutsche Telekom AG 680 238 2151 234 DFN-IP service G-WiN 5515 212 783 176 Sonera Solution Autonomous Sy 1257 205 444 201 SWIPnet Swedish IP Network 5400 205 83 97 BT Ignite European Backbone 719 192 307 131 LANLINK autonomous system 786 176 1873 176 The JANET IP Service 8708 163 41 146 Romania Data Systems S.A. 2856 160 790 138 BTnet UK Regional network 3303 144 532 143 Swisscom Ltd 12302 123 18 30 MobiFon S.A. 3246 122 373 115 Song Networks 8220 112 168 104 COLT Internet - International 5511 110 192 88 France Telecom 3233 107 10 8 RNC - Romanian Natioanal R&D 3269 106 690 64 TELECOM ITALIA 2874 103 85 39 Global One Services AB LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 204 330 111 UniNet S.A. de C.V. 7303 174 27 49 Telecom Argentina Stet-France 11172 169 88 34 Servicios Alestra S.A de C.V 6140 154 78 45 ImpSat USA, Inc. 6503 150 174 108 AVANTEL, S.A. 16814 106 7 12 NSS, S.A. 13999 105 20 7 Mega Cable S.A. de C.V. 10620 99 6 30 TVCABLE BOGOTA 11340 79 2 24 Red Universitaria Nacional 15311 76 26 32 Telefonica Empresas 1916 74 425 41 Fundacao de Amparo a Pesquisa 11992 72 7 30 Integrated Systems 4270 68 18 10 Red de Interconexion Universi 15034 63 5 33 TIBA SA 2277 62 16 3 ECUANET - CORPORACION ECUATOR 4926 62 4 50 Telintar S.A. 7984 62 27 42 Global One Colombia 8065 60 6 16 Empresas Publicas de Medellin 7927 58 4 40 Global One Venezuela 6535 55 4 15 Chilesat Servicios Empresari Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 3908 1051 546 Supernet, Inc. 7132 594 525 Southwestern Bell Internet Se 7843 722 414 Adelphia Corp. 7018 1344 409 AT&T 4323 519 354 Time Warner Communications, I 6197 392 352 BellSouth Network Solutions, 1221 1198 320 Telstra Pty Ltd 1580 320 308 ANOSCEUR 18566 298 294 Covad Communications 852 736 280 Telus Advanced Communications 4151 292 276 USDA 7046 578 275 UUNET Technologies, Inc. 4355 379 275 EarthLink, Inc. 6347 346 271 SAVVIS Communications Corpora 209 577 242 Qwest 7066 490 233 Virginia Polytechnic Institut 376 341 231 Reseau Interordinateurs Scien 1239 877 222 Sprint 1 659 222 GENUITY 705 411 210 UUNET Technologies, Inc. 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 164.236.0.0/16 568 DISO-UNRRA 192.31.242.0/24 771 NASA Ames Research Center 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 192.119.135.0/24 270 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 192.136.136.0/24 7046 UUNET Technologies, Inc. 192.136.136.0/22 568 DISO-UNRRA 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 192.208.29.0/24 3908 Supernet, Inc. 192.208.30.0/23 3908 Supernet, Inc. 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 /8:18 /9:6 /10:7 /11:12 /12:38 /13:90 /14:240 /15:430 /16:7262 /17:1504 /18:2720 /19:7888 /20:7548 /21:5317 /22:8188 /23:9906 /24:64089 /25:177 /26:221 /27:115 /28:76 /29:55 /30:101 /31:0 /32:39 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 3908 621 1051 Supernet, Inc. 702 572 910 UUNET - Commercial IP service 7843 534 722 Adelphia Corp. 701 491 1785 UUNET Technologies, Inc. 690 465 518 Merit Network 7018 429 1344 AT&T 7066 388 490 Virginia Polytechnic Institut 6198 311 395 BellSouth Network Solutions, 1580 307 320 ANOSCEUR 18566 292 298 Covad Communications 6197 276 392 BellSouth Network Solutions, 1239 263 877 Sprint 7046 263 578 UUNET Technologies, Inc. 209 258 577 Qwest 3215 227 296 France Telecom Transpac 3301 226 381 TeliaNet Sweden 11492 219 224 Cable One 4355 217 379 EarthLink, Inc. 705 187 411 UUNET Technologies, Inc. 3320 185 243 Deutsche Telekom AG Number of /24s announced per /8 block (Global) ---------------------------------------------- 4:4 12:550 13:10 15:4 17:7 20:4 24:836 25:1 32:42 38:23 40:8 44:1 55:1 57:14 61:358 62:244 63:1870 64:1276 65:1583 66:1191 67:110 68:140 69:8 80:303 81:62 128:115 129:126 130:19 131:62 132:9 133:2 134:128 135:9 136:512 137:111 138:202 139:71 140:167 141:66 142:69 143:49 144:153 145:17 146:240 147:224 148:247 149:81 150:41 151:77 152:295 153:41 154:8 155:104 156:102 157:105 158:72 159:138 160:21 161:74 162:123 163:86 164:260 165:127 166:105 167:284 168:301 169:62 170:194 171:6 192:5386 193:2429 194:2021 195:822 196:439 198:3617 199:3083 200:2528 202:3452 203:4826 204:3291 205:2115 206:2391 207:2471 208:2575 209:2590 210:595 211:276 212:886 213:777 214:9 215:19 216:2963 217:521 218:50 219:2 End of report

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Mailing List Software Migration
by RIPE NCC WebMaster 10 Oct '02

10 Oct '02

Dear Mailing List Subscriber, The RIPE NCC will change its mailing list software from "majordomo" to "mailman" on 17 October 2002. The new mailing list software will give users more options to manage their subscriptions to the RIPE and RIPE NCC mailing lists. Additionally, this change is being made to ensure stability and continuity of mailing list management and archiving. The new mailing list software will give users a number of options using a web interface: - Subscribing and Unsubscribing to mailing lists - Reviewing general information about the mailing lists - Viewing subscriptions to mailing lists - Temporarily disabling mail delivery - Choosing between regular and digests of mailing list postings - Acknowledgements to postings The web interface will be located at the following URL: http://www.ripe.net/mailman/ As well as using the web interface, mailing list users can manage their subscription and retrieve information by using an e-mail client. Further details on this are available at the above URL. Please note that if mailing list users are already subscribed to one or more mailing lists, they do not have to take any action. Messages can still be sent to the regular mailing lists addresses and subscriptions will not have to be re-confirmed. If you have any questions about this migration, please feel free to send an e-mail to <webmaster(a)ripe.net> Kind Regards, Jeroen Bet RIPE NCC Mailing List Moderation

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The Cidr Report
by cidr-report＠potaroo.net 04 Oct '02

04 Oct '02

This report has been generated at Fri Oct 4 20:32:37 2002 AEST. The report analyses the BGP Routing Table of the Route-Views router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org for a current version of this report. Recent Table History Date Prefixes CIDR Agg 27-09-02 122059 87644 28-09-02 123673 89338 29-09-02 123700 89158 30-09-02 123661 89486 01-10-02 123327 89413 02-10-02 124542 90028 03-10-02 124827 89771 04-10-02 124944 88633 Possible Bogus Routes 39.0.0.0/8 AS4554 EP0-BLK-ASNBLOCK-4 Exchange Point Blocks AS Summary 14015 Number of ASes in routing system 5367 Number of ASes announcing only one prefix 2193 Largest number of prefixes announced by an AS AS209 : ASN-QWEST Qwest 72696064 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'). --- 04Oct02 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 124806 88707 36099 28.9% All ASes AS209 2193 1142 1051 47.9% ASN-QWEST Qwest AS4999 1028 132 896 87.2% SPRINTIPDIAL Sprint AS174 1824 1234 590 32.3% PSINET PSINet Inc. AS7132 595 73 522 87.7% SBIS-AS Southwestern Bell Internet Services AS3908 1115 610 505 45.3% SUPERNETASBLK SuperNet, Inc. AS701 1786 1284 502 28.1% ALTERNET-AS UUNET Technologies, Inc. AS2548 1586 1123 463 29.2% ICIX-MD-AS Business Internet, Inc. AS7018 1366 960 406 29.7% ATT-INTERNET4 AT&T WorldNet Services AS1221 1305 937 368 28.2% ASN-TELSTRA Telstra Pty Ltd AS4323 648 298 350 54.0% TW-COMM Time Warner Communications, Inc. AS7843 715 385 330 46.2% ADELPHIA-AS Adelphia Corp. AS3215 626 305 321 51.3% AS3215 France Telecom Transpac AS852 762 461 301 39.5% ASN852 Telus Advanced Communications AS6197 390 98 292 74.9% BATI-ATL BellSouth Network Solutions, Inc AS18566 291 4 287 98.6% COVAD Covad Communications AS7046 579 304 275 47.5% UUNET-CUSTOMER UUNET Technologies, Inc. AS6347 358 88 270 75.4% DIAMOND SAVVIS Communications Corporation AS4151 280 32 248 88.6% USDA-1 USDA AS1580 319 85 234 73.4% HQ, 5th Signal Command AS1 672 449 223 33.2% GNTY-1 Genuity AS4814 255 35 220 86.3% CHINANET-BEIJING-AP China Telecom (Group)Beijing Telecom CompanyBeijing China AS705 407 197 210 51.6% ASN-ALTERNET UUNET Technologies, Inc. AS1239 849 651 198 23.3% SprintLink Sprint AS4355 382 184 198 51.8% ERMS-EARTHLNK EARTHLINK, INC AS22927 215 20 195 90.7% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS690 518 325 193 37.3% NSFNET-T3-RT-AS Merit Network Inc. AS6595 250 66 184 73.6% DODDSEUR DoD Education Activity Network Assistance Center AS3356 378 211 167 44.2% LEVEL3 Level 3 Communications, LLC AS1791 184 21 163 88.6% SPRINTLINK3 Sprint Government Systems Division AS6327 180 19 161 89.4% SHAWFIBER Shaw Fiberlink Limited Total 22056 11733 10323 46.8% 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 04 Oct '02

04 Oct '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 04 Oct, 2002 Analysis Summary ---------------- BGP routing table entries examined: 115352 Prefixes after maximum aggregation: 74354 Unique aggregates announced to Internet: 55194 Total ASes present in the Internet Routing Table: 13853 Origin-only ASes present in the Internet Routing Table: 11981 Origin ASes announcing only one prefix: 5379 Transit ASes present in the Internet Routing Table: 1872 Transit-only ASes present in the Internet Routing Table: 61 Average AS path length visible in the Internet Routing Table: 5.3 Max AS path length visible: 18 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: 35 Number of addresses announced to Internet: 1190818664 Equivalent to 70 /8s, 250 /16s and 115 /24s Percentage of available address space announced: 32.1 Percentage of allocated address space announced: 58.9 Percentage of available address space allocated: 54.6 Total number of prefixes smaller than registry allocations: 47772 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 18762 Total APNIC prefixes after maximum aggregation: 11392 Prefixes being announced from the APNIC address blocks: 17280 Unique aggregates announced from the APNIC address blocks: 10967 APNIC Region origin ASes present in the Internet Routing Table: 1620 APNIC Region origin ASes announcing only one prefix: 528 APNIC Region transit ASes present in the Internet Routing Table: 282 Average APNIC Region AS path length visible: 5.2 Max APNIC Region AS path length visible: 12 Number of APNIC addresses announced to Internet: 97984928 Equivalent to 5 /8s, 215 /16s and 33 /24s Percentage of available APNIC address space announced: 64.4 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: 72181 Total ARIN prefixes after maximum aggregation: 46019 Prefixes being announced from the ARIN address blocks: 50446 Unique aggregates announced from the ARIN address blocks: 15294 ARIN Region origin ASes present in the Internet Routing Table: 7784 ARIN Region origin ASes announcing only one prefix: 2567 ARIN Region transit ASes present in the Internet Routing Table: 752 Average ARIN Region AS path length visible: 5.2 Max ARIN Region AS path length visible: 18 Number of ARIN addresses announced to Internet: 181344320 Equivalent to 10 /8s, 207 /16s and 24 /24s Percentage of available ARIN address space announced: 67.6 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: 19582 Total RIPE prefixes after maximum aggregation: 14861 Prefixes being announced from the RIPE address blocks: 16255 Unique aggregates announced from the RIPE address blocks: 10812 RIPE Region origin ASes present in the Internet Routing Table: 4072 RIPE Region origin ASes announcing only one prefix: 2203 RIPE Region transit ASes present in the Internet Routing Table: 759 Average RIPE Region AS path length visible: 5.8 Max RIPE Region AS path length visible: 14 Number of RIPE addresses announced to Internet: 114297472 Equivalent to 6 /8s, 208 /16s and 10 /24s Percentage of available RIPE address space announced: 75.7 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 LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 4827 Total LACNIC prefixes after maximum aggregation: 2082 Prefixes being announced from the LACNIC address blocks: 4210 Unique aggregates announced from the LACNIC address blocks: 2624 LACNIC Region origin ASes present in the Internet Routing Table: 316 LACNIC Region origin ASes announcing only one prefix: 81 LACNIC Region transit ASes present in the Internet Routing Table: 68 Average LACNIC Region AS path length visible: 6.0 Max LACNIC Region AS path length visible: 17 Number of LACNIC addresses announced to Internet: 11373568 Equivalent to 0 /8s, 173 /16s and 140 /24s Percentage of available LACNIC address space announced: 67.8 LACNIC AS Blocks 26592 - 26623 LACNIC Address Blocks 200/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1198 1187 881 Telstra Pty Ltd 703 398 375 314 UUNET 2907 361 1831 341 SINET Japan 2764 342 356 314 connect.com.au pty ltd 7474 303 275 206 Optus Communications Pty Ltd 4134 292 2268 96 Data Communications Bureau 17557 289 21 111 Pakistan Telecom 4755 254 139 73 Videsh Sanchar Nigam Ltd. Aut 4766 249 1808 157 Korea Internet Exchange for " 4814 224 80 16 China Telecom (Group) 17676 224 3506 33 XTAGE CORPORATION 9443 186 57 71 Primus Telecommunications 9583 165 32 5 Satyam Infoway Ltd., 4515 137 102 78 Star Internet Services Ltd. 9768 134 385 73 Korea Telecom 7657 128 22 85 The Internet Group Limited 9800 122 188 24 CHINA UNICOM 4739 117 56 108 Commerical Internet eXchange 4713 115 1049 104 NTT Communications Corporatio 9498 109 8 21 BHARTI BT INTERNET LTD. ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 1784 9231 1282 UUNET Technologies, Inc. 7018 1337 7195 937 AT&T 3908 1049 1652 509 Supernet, Inc. 1239 847 3170 649 Sprint 852 756 1145 457 Telus Advanced Communications 7843 717 371 298 Adelphia Corp. 1 662 8089 439 GENUITY 7132 595 672 71 Southwestern Bell Internet Se 7046 579 878 300 UUNET Technologies, Inc. 209 526 2066 341 Qwest 4323 525 435 165 Time Warner Communications, I 690 518 75 325 Merit Network 7066 490 204 257 Virginia Polytechnic Institut 2548 447 1134 277 Business Internet, Inc. 705 409 130 199 UUNET Technologies, Inc. 3549 409 725 295 Global Crossing 6197 390 601 40 BellSouth Network Solutions, 4355 382 292 104 EarthLink, Inc. 2914 368 2027 361 Verio, Inc. 15290 358 230 175 AT&T Canada IES RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 874 2407 728 UUNET - Commercial IP service 3301 387 907 339 TeliaNet Sweden 3215 294 677 170 France Telecom Transpac 3320 248 1966 225 Deutsche Telekom AG 680 238 2151 234 DFN-IP service G-WiN 5515 214 783 177 Sonera Solution Autonomous Sy 5400 210 84 98 BT Ignite European Backbone 1257 205 444 201 SWIPnet Swedish IP Network 719 191 306 130 LANLINK autonomous system 786 176 1873 176 The JANET IP Service 8708 151 41 145 Romania Data Systems S.A. 3303 144 532 143 Swisscom Ltd 2856 135 788 125 BTnet UK Regional network 3246 123 373 116 Song Networks 12302 122 17 29 MobiFon S.A. 5511 111 192 89 France Telecom 8220 110 168 102 COLT Internet - International 3233 107 10 8 RNC - Romanian Natioanal R&D 3269 106 690 64 TELECOM ITALIA 2874 103 85 39 Global One Services AB LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 201 299 113 UniNet S.A. de C.V. 7303 172 27 49 Telecom Argentina Stet-France 11172 170 88 35 Servicios Alestra S.A de C.V 6503 151 206 106 AVANTEL, S.A. 10834 147 75 35 ADVANCE TELECOMUNICACIONES S. 6140 115 76 28 ImpSat USA, Inc. 16814 107 7 13 NSS, S.A. 13999 103 19 8 Mega Cable S.A. de C.V. 10620 93 6 29 TVCABLE BOGOTA 11340 79 2 24 Red Universitaria Nacional 1916 73 409 40 Fundacao de Amparo a Pesquisa 15311 73 24 31 Telefonica Empresas 15034 72 5 32 TIBA SA 11992 70 7 30 Integrated Systems 4270 68 18 10 Red de Interconexion Universi 7984 64 27 42 Global One Colombia 2277 63 16 3 ECUANET - CORPORACION ECUATOR 4926 63 4 51 Telintar S.A. 8065 60 6 16 Empresas Publicas de Medellin 16528 57 5 35 ImpSat S.A. Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 3908 1049 540 Supernet, Inc. 7132 595 524 Southwestern Bell Internet Se 7843 717 419 Adelphia Corp. 7018 1337 400 AT&T 4323 525 360 Time Warner Communications, I 6197 390 350 BellSouth Network Solutions, 1221 1198 317 Telstra Pty Ltd 1580 319 307 ANOSCEUR 852 756 299 Telus Advanced Communications 18566 291 287 Covad Communications 7046 579 279 UUNET Technologies, Inc. 4355 382 278 EarthLink, Inc. 6347 341 267 SAVVIS Communications Corpora 4151 280 265 USDA 7066 490 233 Virginia Polytechnic Institut 376 337 229 Reseau Interordinateurs Scien 1 662 223 GENUITY 705 409 210 UUNET Technologies, Inc. 11492 222 209 Cable One 4814 224 208 China Telecom (Group) 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 164.236.0.0/16 568 DISO-UNRRA 192.31.242.0/24 771 NASA Ames Research Center 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 192.119.135.0/24 270 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 192.136.136.0/24 7046 UUNET Technologies, Inc. 192.136.136.0/22 568 DISO-UNRRA 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 192.208.29.0/24 3908 Supernet, Inc. 192.208.30.0/23 3908 Supernet, Inc. 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 /8:18 /9:6 /10:7 /11:12 /12:37 /13:90 /14:238 /15:428 /16:7274 /17:1501 /18:2708 /19:7863 /20:7508 /21:5292 /22:8106 /23:9863 /24:63607 /25:171 /26:208 /27:116 /28:84 /29:52 /30:107 /31:0 /32:56 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 3908 619 1049 Supernet, Inc. 702 538 874 UUNET - Commercial IP service 7843 528 717 Adelphia Corp. 701 485 1784 UUNET Technologies, Inc. 690 465 518 Merit Network 7018 420 1337 AT&T 7066 388 490 Virginia Polytechnic Institut 1580 306 319 ANOSCEUR 18566 285 291 Covad Communications 6197 274 390 BellSouth Network Solutions, 7046 265 579 UUNET Technologies, Inc. 6198 243 313 BellSouth Network Solutions, 1239 240 847 Sprint 3301 231 387 TeliaNet Sweden 3215 225 294 France Telecom Transpac 4355 220 382 EarthLink, Inc. 11492 217 222 Cable One 209 203 526 Qwest 3320 189 248 Deutsche Telekom AG 5400 188 210 BT Ignite European Backbone Number of /24s announced per /8 block (Global) ---------------------------------------------- 4:4 12:550 13:10 15:4 17:7 20:4 24:841 25:1 32:41 38:24 40:7 44:1 55:1 57:14 61:358 62:235 63:1851 64:1283 65:1523 66:1203 67:110 68:124 80:300 81:56 128:118 129:125 130:19 131:54 132:9 133:2 134:129 135:9 136:589 137:104 138:153 139:70 140:166 141:66 142:71 143:49 144:152 145:17 146:240 147:225 148:248 149:78 150:42 151:73 152:297 153:37 154:9 155:105 156:102 157:107 158:69 159:139 160:23 161:73 162:123 163:88 164:262 165:127 166:106 167:273 168:301 169:61 170:180 171:3 192:5378 193:2385 194:2020 195:810 196:435 198:3599 199:3058 200:2613 202:3416 203:4798 204:3253 205:2105 206:2334 207:2480 208:2552 209:2580 210:588 211:246 212:880 213:729 214:7 215:19 216:2926 217:502 218:47 219:2 End of report

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New Document available: RIPE-259
by RIPE NCC Document Announcement Service 02 Oct '02

02 Oct '02

New/Revised RIPE Document Announcement -------------------------------------- A revised/new document is available from the RIPE document store. Ref: ripe-259 Title: Smallest RIPE NCC Allocation / Assignment Sizes Author: Joao Luis Silva Damas, Leo Vegoda Date: 2 October 2002 Format: PS=10860 TXT=2132 Obsoletes: ripe-222, ripe-242 Obsoleted by: Updates: Updated by: Short content description ------------------------- The "Smallest RIPE NCC Allocation / Assignment Sizes" document contains the size of the minimum and default allocations made by the RIPE NCC to Local Internet Registries (LIRs) and End Users from IPv4 and IPv6 CIDR blocks allocated to the RIPE NCC by the Internet Assigned Numbers Authority (IANA). Accessing the RIPE document store --------------------------------- You can access the RIPE documents in HTML format via WWW. RIPE-259 is available at the following URL: http://www.ripe.net/ripe/docs/smallest-alloc-sizes.html The RIPE document store is also available via anonymous FTP to ftp.ripe.net, in the directory ripe/docs. The URLs for the new documents on the FTP-server are: ftp://ftp.ripe.net/ripe/docs/ripe-259.ps PostScript version ftp://ftp.ripe.net/ripe/docs/ripe-259.txt plain text version

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Re: Route Flap Damping: Harmful ?
by Christian Panigl, ACOnet/VIX/UniVie 01 Oct '02

01 Oct '02

>Date: Wed, 18 Sep 2002 09:09:51 -0400 >From: Zhuoqing Morley Mao <zmao(a)research.att.com> > >Could you elaborate on the phenonmeon you observed? In particular, how >were you able to determine it was caused by the BGP convergence effects? Hi Morley, we (ACOnet/AS1853) do have our primary transit through Sprint/AS1239 and a (lowerpref) backup through Geant/AS20965_3549. We are receiving a full table from both (on two different routers). The path through Sprint for most of the US Internet is shorter than through Geant. When comparing the flap statistics on the two routers many of the listed prefixes are the same with about the same "duration", but the number of flaps seen through the longer path is much bigger (factor of 2-3 !) As I wrote in a previous mail, feel free to use our looking-glass http://www.aco.net/lookingglass/lg.html [flap statistics] to see the enormous amount of flaps counted by our Geant connected router. Unfortunately our Sprint connected router is not accessible through the looking-glass. But if you like I could produce snapshots and send them to you. >We hope that someone in Europe could also help out with the experiment, >details of which are described at http://www.psg.com/~zmao I think there was the idea to eventually enable RIS boxes as BGP beacons ? We do have a RIPE RIS box in Vienna at the VIX (RRC05). >We currently have two beacons in the U.S., some topology diversity would >really help. If RIS doesn't help we are considering setting up an ACOnet beacon for you, however this might not happen before begin of October. >Thanks! You are welcome ! Kind regards CP --- ---------------------------------------------------------------------- --- --- Christian Panigl : Vienna University Computer Center - ACOnet --- --- VUCC - ACOnet - VIX : -------------------------------------------- --- --- Universitaetsstrasse 7 : Mail: Panigl(a)CC.UniVie.ac.at (CP8-RIPE) --- --- A-1010 Vienna / Austria : Tel: +43 1 4277-14032 (Fax: -9140) --- --- ---------------------------------------------------------------------- ---

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ANNOUNCEMENT: RIPE NCC's New Projects Proudly Presents "RIS Routing Beacons"
by Matthew Williams 30 Sep '02

30 Sep '02

[Apologies for duplicate emails] Dear All, RIPE NCC are pleased to announce "RIS Routing Beacons": ------------------------------------------------------ At RIPE 43, Randy Bush held an interesting talk about some unwanted effects of route flap damping, as specified in RIPE-229. Subsequently, RIPE NCC's RIS project offered to assist these studies by adding the "Routing Beacon" functionality to our Remote Route Collectors (RRC). The geographically disperse distribution of our collectors makes them ideal for this purpose. RIS Routing Beacon Address Schema: ---------------------------------- 195.80.224.0/24 RRC00 - RIPE NCC, Amsterdam, NL 195.80.225.0/24 RRC01 - LINX, London, UK 195.80.226.0/24 RRC02 - SFINX, Paris, FR 195.80.227.0/24 RRC03 - AMS-IX, Amsterdam, NL 195.80.228.0/24 RRC04 - CIXP, Geneva, CH 195.80.229.0/24 RRC05 - VIX, Vienna, AT 195.80.230.0/24 RRC06 - NSPIXP2, Otemachi, JP 195.80.231.0/24 RRC07 - Netnod-IX, Stockholm, SE 195.80.232.0/24 RRC08 - MAE-WEST, San Jose, CA, US These prefixes are advertised ("network x.x.x.x") at 00:00h, 04:00h, 08:00h, 12:00h, 16:00h and 20:00h (UTC) with the corresponding withdrawals ("no network x.x.x.x") two hours later. Please see URL: http://www.ripe.net/ris/beacon.html --------------------------------- For more information about the RIS: http://www.ripe.net/ris/ Best regards, The RIS team: James Aldridge, Daniel Karrenberg, Henk Uijterwaal, Arife Vural and Matthew Williams --- > Matthew Williams-Bywater (MW243-RIPE) > Customer Liaison Engineer > RIPE NCC (http://www.ripe.net/np/)

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The Cidr Report
by cidr-report＠potaroo.net 28 Sep '02

28 Sep '02

This report has been generated at Sun Sep 29 06:32:47 2002 AEST. The report analyses the BGP Routing Table of the Route-Views router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org for a current version of this report. Recent Table History Date Prefixes CIDR Agg 22-09-02 121438 87731 23-09-02 121323 87980 24-09-02 121407 88246 25-09-02 121566 88349 26-09-02 121459 87822 27-09-02 122059 87644 28-09-02 123673 89338 29-09-02 123685 89454 Possible Bogus Routes 10.5.5.0/30 AS11537 ABILENE University Corporation for Advanced Internet Development 10.11.11.0/30 AS11537 ABILENE University Corporation for Advanced Internet Development 10.33.0.0/23 AS174 PSINET PSINet Inc. 10.33.8.0/24 AS174 PSINET PSINet Inc. 39.0.0.0/8 AS4554 EP0-BLK-ASNBLOCK-4 Exchange Point Blocks AS Summary 13991 Number of ASes in routing system 5313 Number of ASes announcing only one prefix 1940 Largest number of prefixes announced by an AS AS174 : PSINET PSINet Inc. 73212416 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'). --- 29Sep02 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 123655 89454 34201 27.7% All ASes AS209 1818 1042 776 42.7% ASN-QWEST Qwest AS3908 1124 622 502 44.7% SUPERNETASBLK SuperNet, Inc. AS701 1786 1286 500 28.0% ALTERNET-AS UUNET Technologies, Inc. AS2548 1582 1119 463 29.3% ICIX-MD-AS Business Internet, Inc. AS7132 603 140 463 76.8% SBIS-AS Southwestern Bell Internet Services AS174 1940 1520 420 21.6% PSINET PSINet Inc. AS7018 1360 959 401 29.5% ATT-INTERNET4 AT&T WorldNet Services AS1221 1306 940 366 28.0% ASN-TELSTRA Telstra Pty Ltd AS4323 647 305 342 52.9% TW-COMM Time Warner Communications, Inc. AS7843 712 410 302 42.4% ADELPHIA-AS Adelphia Corp. AS852 758 458 300 39.6% ASN852 Telus Advanced Communications AS6197 383 97 286 74.7% BATI-ATL BellSouth Network Solutions, Inc AS7046 585 312 273 46.7% UUNET-CUSTOMER UUNET Technologies, Inc. AS18566 273 4 269 98.5% COVAD Covad Communications AS4151 279 32 247 88.5% USDA-1 USDA AS4355 383 145 238 62.1% ERMS-EARTHLNK EARTHLINK, INC AS1 669 447 222 33.2% GNTY-1 Genuity AS6347 393 173 220 56.0% DIAMOND SAVVIS Communications Corporation AS4814 255 37 218 85.5% CHINANET-BEIJING-AP China Telecom (Group)Beijing Telecom CompanyBeijing China AS705 409 199 210 51.3% ASN-ALTERNET UUNET Technologies, Inc. AS1239 849 652 197 23.2% SprintLink Sprint AS22927 215 20 195 90.7% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS690 518 325 193 37.3% NSFNET-T3-RT-AS Merit Network Inc. AS6595 250 68 182 72.8% DODDSEUR DoD Education Activity Network Assistance Center AS4134 302 122 180 59.6% ERX-CHINALINK Data Communications Bureau AS2386 421 243 178 42.3% INS-AS AT&T Data Communications Services AS3356 389 212 177 45.5% LEVEL3 Level 3 Communications, LLC AS1791 184 21 163 88.6% SPRINTLINK3 Sprint Government Systems Division AS6327 180 20 160 88.9% SHAWFIBER Shaw Fiberlink Limited AS376 337 184 153 45.4% RISQ-AS Reseau Interordinateurs Scientique Quebecois (RISQ) Total 20910 12114 8796 42.1% 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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The Cidr Report
by cidr-report＠potaroo.net 27 Sep '02

27 Sep '02

This report has been generated at Fri Sep 27 20:32:43 2002 AEST. The report analyses the BGP Routing Table of the Route-Views router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org for a current version of this report. Recent Table History Date Prefixes CIDR Agg 20-09-02 121329 87082 21-09-02 121481 87337 22-09-02 121438 87731 23-09-02 121323 87980 24-09-02 121407 88246 25-09-02 121566 88349 26-09-02 121459 87822 27-09-02 122059 87558 Possible Bogus Routes 7.1.1.0/30 AS12357 COMUNITEL Comunitel Global Autonomous System 10.5.5.0/30 AS11537 ABILENE University Corporation for Advanced Internet Development 10.11.11.0/30 AS11537 ABILENE University Corporation for Advanced Internet Development 10.33.0.0/23 AS174 PSINET PSINet Inc. 10.33.8.0/24 AS174 PSINET PSINet Inc. 39.0.0.0/8 AS4554 EP0-BLK-ASNBLOCK-4 Exchange Point Blocks AS Summary 13979 Number of ASes in routing system 5289 Number of ASes announcing only one prefix 1816 Largest number of prefixes announced by an AS AS209 : ASN-QWEST Qwest 73220608 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'). --- 27Sep02 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 121705 87359 34346 28.2% All ASes AS209 1816 1038 778 42.8% ASN-QWEST Qwest AS3908 1124 621 503 44.8% SUPERNETASBLK SuperNet, Inc. AS701 1786 1286 500 28.0% ALTERNET-AS UUNET Technologies, Inc. AS2548 1586 1123 463 29.2% ICIX-MD-AS Business Internet, Inc. AS7132 602 140 462 76.7% SBIS-AS Southwestern Bell Internet Services AS7018 1359 959 400 29.4% ATT-INTERNET4 AT&T WorldNet Services AS7843 711 341 370 52.0% ADELPHIA-AS Adelphia Corp. AS1221 1304 938 366 28.1% ASN-TELSTRA Telstra Pty Ltd AS4323 645 295 350 54.3% TW-COMM Time Warner Communications, Inc. AS852 756 458 298 39.4% ASN852 Telus Advanced Communications AS6197 382 97 285 74.6% BATI-ATL BellSouth Network Solutions, Inc AS7046 590 316 274 46.4% UUNET-CUSTOMER UUNET Technologies, Inc. AS18566 272 4 268 98.5% COVAD Covad Communications AS174 593 330 263 44.4% PSINET PSINet Inc. AS4151 279 32 247 88.5% USDA-1 USDA AS4355 382 144 238 62.3% ERMS-EARTHLNK EARTHLINK, INC AS1 672 442 230 34.2% GNTY-1 Genuity AS6347 397 170 227 57.2% DIAMOND SAVVIS Communications Corporation AS4814 255 36 219 85.9% CHINANET-BEIJING-AP China Telecom (Group)Beijing Telecom CompanyBeijing China AS705 408 198 210 51.5% ASN-ALTERNET UUNET Technologies, Inc. AS1580 210 11 199 94.8% HQ, 5th Signal Command AS22927 215 20 195 90.7% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS690 517 324 193 37.3% NSFNET-T3-RT-AS Merit Network Inc. AS1239 1110 930 180 16.2% SprintLink Sprint AS2386 421 243 178 42.3% INS-AS AT&T Data Communications Services AS3356 389 214 175 45.0% LEVEL3 Level 3 Communications, LLC AS6595 232 60 172 74.1% DODDSEUR DoD Education Activity Network Assistance Center AS1791 184 21 163 88.6% SPRINTLINK3 Sprint Government Systems Division AS4134 302 139 163 54.0% ERX-CHINALINK Data Communications Bureau AS6327 180 20 160 88.9% SHAWFIBER Shaw Fiberlink Limited Total 19679 10950 8729 44.4% 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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