This report has been generated at Fri Feb 14 00:46:03 2003 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 07-02-03 118526 85124 08-02-03 118568 85173 09-02-03 118579 85149 10-02-03 118627 85137 11-02-03 118637 85198 12-02-03 118760 85310 13-02-03 118989 85108 14-02-03 119071 85326 AS Summary 14555 Number of ASes in routing system 5721 Number of ASes announcing only one prefix 1571 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 73048064 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'). --- 14Feb03 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 119071 85433 33638 28.3% All ASes AS3908 1056 565 491 46.5% SUPERNETASBLK SuperNet, Inc. AS18566 474 7 467 98.5% COVAD Covad Communications AS4151 523 102 421 80.5% USDA-1 USDA AS701 1571 1161 410 26.1% ALTERNET-AS UUNET Technologies, Inc. AS7018 1425 1033 392 27.5% ATT-INTERNET4 AT&T WorldNet Services AS4323 528 169 359 68.0% TW-COMM Time Warner Communications, Inc. AS7843 569 240 329 57.8% ADELPHIA-AS Adelphia Corp. AS6197 476 157 319 67.0% BATI-ATL BellSouth Network Solutions, Inc AS1221 1130 824 306 27.1% ASN-TELSTRA Telstra Pty Ltd AS7046 566 274 292 51.6% UUNET-CUSTOMER UUNET Technologies, Inc. AS4355 405 119 286 70.6% ERMS-EARTHLNK EARTHLINK, INC AS1239 958 674 284 29.6% SPRINTLINK Sprint AS6347 368 85 283 76.9% DIAMOND SAVVIS Communications Corporation AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS705 446 196 250 56.1% ASN-ALTERNET UUNET Technologies, Inc. AS4814 261 15 246 94.3% CHINANET-BEIJING-AP China Telecom (Group) AS1 663 435 228 34.4% GNTY-1 Genuity AS6198 434 220 214 49.3% BATI-MIA BellSouth Network Solutions, Inc AS22291 242 32 210 86.8% CHARTER-LA Charter Communications AS17676 224 24 200 89.3% GIGAINFRA XTAGE CORPORATION AS690 498 308 190 38.2% MERIT-AS-27 Merit Network Inc. AS4134 306 119 187 61.1% ERX-CHINALINK Data Communications Bureau AS209 523 337 186 35.6% ASN-QWEST Qwest AS2386 439 259 180 41.0% INS-AS AT&T Data Communications Services AS2048 260 87 173 66.5% LANET-1 State of Louisiana AS852 606 446 160 26.4% ASN852 Telus Advanced Communications AS17557 339 188 151 44.5% PKTELECOM-AS-AP Pakistan Telecom AS22773 177 27 150 84.7% CCINET-2 Cox Communications Inc. Atlanta AS6140 285 136 149 52.3% IMPSAT-USA ImpSat AS6327 186 40 146 78.5% SHAWFIBER Shaw Fiberlink Limited Total 16233 8293 7940 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