This report has been generated at Fri Nov 1 21:44:58 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 25-10-02 114752 82664 26-10-02 115193 82582 26-10-02 115135 82541 28-10-02 115001 82653 29-10-02 115335 82760 30-10-02 115374 82790 31-10-02 115340 82890 01-11-02 115442 82880 AS Summary 13957 Number of ASes in routing system 5465 Number of ASes announcing only one prefix 1748 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'). --- 01Nov02 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 115457 82891 32566 28.2% All ASes AS3908 1076 564 512 47.6% SUPERNETASBLK SuperNet, Inc. AS701 1748 1265 483 27.6% ALTERNET-AS UUNET Technologies, Inc. AS7843 782 330 452 57.8% ADELPHIA-AS Adelphia Corp. AS2828 487 112 375 77.0% XO-AS15 XO Communications AS6197 457 100 357 78.1% BATI-ATL BellSouth Network Solutions, Inc AS7018 1344 993 351 26.1% ATT-INTERNET4 AT&T WorldNet Services AS4323 516 181 335 64.9% TW-COMM Time Warner Communications, Inc. AS18566 337 4 333 98.8% COVAD Covad Communications AS1221 1196 873 323 27.0% ASN-TELSTRA Telstra Pty Ltd AS209 629 336 293 46.6% ASN-QWEST Qwest AS7046 585 299 286 48.9% UUNET-CUSTOMER UUNET Technologies, Inc. AS6347 354 82 272 76.8% DIAMOND SAVVIS Communications Corporation AS4355 388 127 261 67.3% ERMS-EARTHLNK EARTHLINK, INC AS4151 330 89 241 73.0% USDA-1 USDA AS705 441 202 239 54.2% ASN-ALTERNET UUNET Technologies, Inc. AS1239 887 662 225 25.4% SPRINTLINK Sprint AS6198 403 180 223 55.3% BATI-MIA BellSouth Network Solutions, Inc AS852 689 467 222 32.2% ASN852 Telus Advanced Communications AS1 655 437 218 33.3% GNTY-1 Genuity AS4814 233 15 218 93.6% CHINANET-BEIJING-AP China Telecom (Group)Beijing Telecom CompanyBeijing China AS7132 281 71 210 74.7% SBIS-AS Southwestern Bell Internet Services AS6140 263 65 198 75.3% IMPSAT-USA ImpSat USA, Inc. AS17557 320 122 198 61.9% PKTELECOM-AS-AP APNIC ASN block AS22927 216 20 196 90.7% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS6595 248 57 191 77.0% DODDSEUR DoD Education Activity Network Assistance Center AS17676 226 35 191 84.5% GIGAINFRA APNIC ASN block AS690 517 331 186 36.0% MERIT-AS-27 Merit Network Inc. AS4134 296 114 182 61.5% ERX-CHINALINK Data Communications Bureau AS2048 265 88 177 66.8% LANET-1 State of Louisiana AS2548 403 244 159 39.5% ICIX-MD-AS Business Internet, Inc. Total 16572 8465 8107 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