This report has been generated at Fri Oct 18 21:45:11 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 11-10-02 114611 82522 12-10-02 114687 82431 13-10-02 114551 82294 14-10-02 114344 82657 15-10-02 114786 82675 16-10-02 114805 82681 17-10-02 114726 82664 18-10-02 114704 82837 Possible Bogus Routes 192.0.0.0/24 AS3215 AS3215 France Telecom Transpac AS Summary 13878 Number of ASes in routing system 5410 Number of ASes announcing only one prefix 1759 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 73212160 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'). --- 18Oct02 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 115049 82849 32200 28.0% All ASes AS7132 591 68 523 88.5% SBIS-AS Southwestern Bell Internet Services AS3908 1059 554 505 47.7% SUPERNETASBLK SuperNet, Inc. AS701 1759 1284 475 27.0% ALTERNET-AS UUNET Technologies, Inc. AS7843 756 324 432 57.1% ADELPHIA-AS Adelphia Corp. AS7018 1352 996 356 26.3% ATT-INTERNET4 AT&T WorldNet Services AS4323 518 181 337 65.1% TW-COMM Time Warner Communications, Inc. AS1221 1201 878 323 26.9% ASN-TELSTRA Telstra Pty Ltd AS18566 313 4 309 98.7% COVAD Covad Communications AS852 737 458 279 37.9% ASN852 Telus Advanced Communications AS6347 346 77 269 77.7% DIAMOND SAVVIS Communications Corporation AS4355 385 128 257 66.8% ERMS-EARTHLNK EARTHLINK, INC AS7046 578 342 236 40.8% UUNET-CUSTOMER UUNET Technologies, Inc. AS209 569 337 232 40.8% ASN-QWEST Qwest AS1239 879 661 218 24.8% SPRINTLINK Sprint AS1 651 434 217 33.3% GNTY-1 Genuity AS705 443 226 217 49.0% ASN-ALTERNET UUNET Technologies, Inc. AS4814 229 15 214 93.4% CHINANET-BEIJING-AP China Telecom (Group) AS4151 292 88 204 69.9% USDA-1 USDA AS22927 215 20 195 90.7% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS6595 249 56 193 77.5% DODDSEUR DoD Education Activity Network Assistance Center AS17676 224 34 190 84.8% GIGAINFRA APNIC ASN block AS4134 297 113 184 62.0% ERX-CHINALINK Data Communications Bureau AS17557 301 121 180 59.8% PKTELECOM-AS-AP APNIC ASN block AS6140 256 77 179 69.9% IMPSAT-USA ImpSat USA, Inc. AS2048 262 88 174 66.4% LANET-1 State of Louisiana AS6197 395 226 169 42.8% BATI-ATL BellSouth Network Solutions, Inc AS690 517 350 167 32.3% MERIT-AS-27 Merit Network Inc. AS6198 395 229 166 42.0% BATI-MIA BellSouth Network Solutions, Inc AS1791 185 21 164 88.6% SPRINTLINK3 Sprint Government Systems Division AS2548 426 266 160 37.6% ICIX-MD-AS Business Internet, Inc. Total 16380 8656 7724 47.2% 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