This report has been generated at Fri Feb 7 21:46:10 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 31-01-03 118463 85095 01-02-03 118556 85054 02-02-03 118567 85128 03-02-03 118587 85148 04-02-03 118588 85028 05-02-03 118502 85128 06-02-03 118561 85108 07-02-03 118526 85124 AS Summary 14519 Number of ASes in routing system 5722 Number of ASes announcing only one prefix 1584 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 72916992 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'). --- 07Feb03 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 118612 85169 33443 28.2% All ASes AS3908 1058 579 479 45.3% SUPERNETASBLK SuperNet, Inc. AS18566 457 7 450 98.5% COVAD Covad Communications AS701 1584 1171 413 26.1% ALTERNET-AS UUNET Technologies, Inc. AS7018 1433 1041 392 27.4% ATT-INTERNET4 AT&T WorldNet Services AS4323 528 170 358 67.8% TW-COMM Time Warner Communications, Inc. AS6197 472 154 318 67.4% BATI-ATL BellSouth Network Solutions, Inc AS7843 568 253 315 55.5% ADELPHIA-AS Adelphia Corp. AS1221 1133 829 304 26.8% ASN-TELSTRA Telstra Pty Ltd AS1239 964 678 286 29.7% SPRINTLINK Sprint AS7046 563 280 283 50.3% UUNET-CUSTOMER UUNET Technologies, Inc. AS6347 367 85 282 76.8% DIAMOND SAVVIS Communications Corporation AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS4355 396 120 276 69.7% ERMS-EARTHLNK EARTHLINK, INC AS4151 345 71 274 79.4% USDA-1 USDA AS705 437 189 248 56.8% ASN-ALTERNET UUNET Technologies, Inc. AS4814 261 15 246 94.3% CHINANET-BEIJING-AP China Telecom (Group) AS852 680 444 236 34.7% ASN852 Telus Advanced Communications AS6198 432 201 231 53.5% BATI-MIA BellSouth Network Solutions, Inc AS1 665 435 230 34.6% GNTY-1 Genuity AS22291 238 31 207 87.0% CHARTER-LA Charter Communications AS17676 222 26 196 88.3% GIGAINFRA XTAGE CORPORATION AS209 532 341 191 35.9% ASN-QWEST Qwest AS690 498 308 190 38.2% MERIT-AS-27 Merit Network Inc. AS4134 301 117 184 61.1% ERX-CHINALINK Data Communications Bureau AS2386 437 263 174 39.8% INS-AS AT&T Data Communications Services AS2048 259 87 172 66.4% LANET-1 State of Louisiana AS17557 336 186 150 44.6% PKTELECOM-AS-AP Pakistan Telecom AS6140 284 135 149 52.5% IMPSAT-USA ImpSat AS6327 186 40 146 78.5% SHAWFIBER Shaw Fiberlink Limited AS11492 307 164 143 46.6% CABLEONE CABLE ONE Total 16238 8434 7804 48.1% 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