This report has been generated at Fri Mar 7 21:46:45 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 28-02-03 119708 85685 01-03-03 119794 85736 02-03-03 119902 85774 03-03-03 119905 85881 04-03-03 120066 86042 05-03-03 120121 86071 06-03-03 120244 86209 07-03-03 120289 86173 AS Summary 14703 Number of ASes in routing system 5787 Number of ASes announcing only one prefix 1586 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'). --- 07Mar03 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 120335 86155 34180 28.4% All ASes AS3908 1085 567 518 47.7% SUPERNETASBLK SuperNet, Inc. AS18566 507 9 498 98.2% COVAD Covad Communications AS701 1586 1146 440 27.7% ALTERNET-AS UUNET Technologies, Inc. AS4151 532 106 426 80.1% USDA-1 USDA AS4323 537 170 367 68.3% TW-COMM Time Warner Communications, Inc. AS7843 590 232 358 60.7% ADELPHIA-AS Adelphia Corp. AS7018 1380 1024 356 25.8% ATT-INTERNET4 AT&T WorldNet Services AS6197 498 157 341 68.5% BATI-ATL BellSouth Network Solutions, Inc AS1221 1113 809 304 27.3% ASN-TELSTRA Telstra Pty Ltd AS1239 973 691 282 29.0% SPRINTLINK Sprint AS4355 401 120 281 70.1% 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 263 15 248 94.3% CHINANET-BEIJING-AP China Telecom (Group) AS6198 450 203 247 54.9% BATI-MIA BellSouth Network Solutions, Inc AS1 662 436 226 34.1% GNTY-1 Genuity AS22291 243 31 212 87.2% CHARTER-LA Charter Communications AS27364 240 29 211 87.9% ACS-INTERNET Armstrong Cable Services AS17676 230 26 204 88.7% GIGAINFRA XTAGE CORPORATION AS2386 483 282 201 41.6% INS-AS AT&T Data Communications Services AS4134 304 113 191 62.8% CHINANET-BACKBONE No.31,Jin-rong Street AS209 532 342 190 35.7% ASN-QWEST Qwest AS690 500 310 190 38.0% MERIT-AS-27 Merit Network Inc. AS6347 370 190 180 48.6% DIAMOND SAVVIS Communications Corporation AS2048 259 87 172 66.4% LANET-1 State of Louisiana AS17557 359 206 153 42.6% PKTELECOM-AS-AP Pakistan Telecom 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 284 136 148 52.1% IMPSAT-USA ImpSat AS11492 322 174 148 46.0% CABLEONE CABLE ONE Total 15870 7943 7927 49.9% 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@apops.net routing-wg@ripe.net afnog@afnog.org