This report has been generated at Fri Feb 28 21:46:34 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 21-02-03 119400 85542 22-02-03 119615 85397 23-02-03 119379 85455 24-02-03 119479 85425 25-02-03 119470 85630 26-02-03 119690 85676 27-02-03 119740 85694 28-02-03 119708 85768 AS Summary 14678 Number of ASes in routing system 5782 Number of ASes announcing only one prefix 1604 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 73080832 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'). --- 28Feb03 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 119861 85734 34127 28.5% All ASes AS3908 1084 568 516 47.6% SUPERNETASBLK SuperNet, Inc. AS18566 491 8 483 98.4% COVAD Covad Communications AS701 1604 1151 453 28.2% ALTERNET-AS UUNET Technologies, Inc. AS4151 532 105 427 80.3% USDA-1 USDA AS4323 533 169 364 68.3% TW-COMM Time Warner Communications, Inc. AS7018 1385 1025 360 26.0% ATT-INTERNET4 AT&T WorldNet Services AS7843 556 224 332 59.7% ADELPHIA-AS Adelphia Corp. AS6197 485 157 328 67.6% BATI-ATL BellSouth Network Solutions, Inc AS7046 559 244 315 56.4% UUNET-CUSTOMER UUNET Technologies, Inc. AS1221 1121 816 305 27.2% ASN-TELSTRA Telstra Pty Ltd AS1239 969 686 283 29.2% SPRINTLINK Sprint AS4355 402 119 283 70.4% ERMS-EARTHLNK EARTHLINK, INC AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS705 450 196 254 56.4% ASN-ALTERNET UUNET Technologies, Inc. AS4814 264 15 249 94.3% CHINANET-BEIJING-AP China Telecom (Group) AS6198 439 205 234 53.3% BATI-MIA BellSouth Network Solutions, Inc AS1 662 435 227 34.3% GNTY-1 Genuity AS22291 243 31 212 87.2% CHARTER-LA Charter Communications AS17676 230 26 204 88.7% GIGAINFRA XTAGE CORPORATION AS6347 369 168 201 54.5% DIAMOND SAVVIS Communications Corporation AS2386 478 283 195 40.8% INS-AS AT&T Data Communications Services AS209 528 337 191 36.2% ASN-QWEST Qwest AS4134 304 113 191 62.8% CHINANET-BACKBONE No.31,Jin-rong Street AS690 498 308 190 38.2% MERIT-AS-27 Merit Network Inc. AS2048 258 87 171 66.3% LANET-1 State of Louisiana AS852 599 444 155 25.9% ASN852 Telus Advanced Communications AS7303 240 90 150 62.5% AR-TAST-LACNIC Telecom Argentina Stet-France Telecom S.A. AS22773 182 32 150 82.4% CCINET-2 Cox Communications Inc. Atlanta AS6140 285 136 149 52.3% IMPSAT-USA ImpSat AS6327 187 41 146 78.1% SHAWFIBER Shaw Fiberlink Limited Total 16232 8233 7999 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@apops.net routing-wg@ripe.net afnog@afnog.org