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