This report has been generated at Fri Oct 25 21:44:47 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 18-10-02 114704 82884 19-10-02 115116 82872 20-10-02 114956 82781 21-10-02 114861 82208 22-10-02 115010 82457 23-10-02 115086 82530 24-10-02 115044 82513 25-10-02 114752 82519 AS Summary 13926 Number of ASes in routing system 5448 Number of ASes announcing only one prefix 1750 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 73146368 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'). --- 25Oct02 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 115124 82508 32616 28.3% All ASes AS3908 1062 559 503 47.4% SUPERNETASBLK SuperNet, Inc. AS701 1750 1260 490 28.0% ALTERNET-AS UUNET Technologies, Inc. AS7843 759 337 422 55.6% ADELPHIA-AS Adelphia Corp. AS2828 472 102 370 78.4% XO-AS15 XO Communications AS7018 1361 1003 358 26.3% ATT-INTERNET4 AT&T WorldNet Services AS7132 415 70 345 83.1% SBIS-AS Southwestern Bell Internet Services AS6198 419 80 339 80.9% BATI-MIA BellSouth Network Solutions, Inc AS4323 519 181 338 65.1% TW-COMM Time Warner Communications, Inc. AS1221 1196 874 322 26.9% ASN-TELSTRA Telstra Pty Ltd AS18566 326 4 322 98.8% COVAD Covad Communications AS7046 587 299 288 49.1% UUNET-CUSTOMER UUNET Technologies, Inc. AS852 737 458 279 37.9% ASN852 Telus Advanced Communications AS6347 350 75 275 78.6% DIAMOND SAVVIS Communications Corporation AS4355 385 125 260 67.5% ERMS-EARTHLNK EARTHLINK, INC AS705 442 203 239 54.1% ASN-ALTERNET UUNET Technologies, Inc. AS4151 292 55 237 81.2% USDA-1 USDA AS209 572 338 234 40.9% ASN-QWEST Qwest AS1239 885 663 222 25.1% SPRINTLINK Sprint AS1 651 434 217 33.3% GNTY-1 Genuity AS4814 232 15 217 93.5% CHINANET-BEIJING-AP China Telecom (Group)Beijing Telecom CompanyBeijing China AS17557 314 118 196 62.4% PKTELECOM-AS-AP APNIC ASN block AS22927 215 20 195 90.7% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS690 517 324 193 37.3% MERIT-AS-27 Merit Network Inc. AS6140 258 65 193 74.8% IMPSAT-USA ImpSat USA, Inc. AS6595 249 56 193 77.5% DODDSEUR DoD Education Activity Network Assistance Center AS17676 224 34 190 84.8% GIGAINFRA APNIC ASN block AS4134 296 113 183 61.8% ERX-CHINALINK Data Communications Bureau AS2048 265 88 177 66.8% LANET-1 State of Louisiana AS174 290 133 157 54.1% PSINET PSINet Inc. AS2548 401 244 157 39.2% ICIX-MD-AS Business Internet, Inc. Total 16441 8330 8111 49.3% 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