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@merit.edu eof-list@ripe.net apops@lists.apnic.net routing-wg@ripe.net afnog@afnog.org