This report has been generated at Fri Nov 8 21:47:30 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 01-11-02 115442 82842 02-11-02 115409 82853 03-11-02 115133 82798 04-11-02 115076 82886 05-11-02 115280 82945 06-11-02 115314 82968 07-11-02 115370 82934 08-11-02 115262 82976 AS Summary 13984 Number of ASes in routing system 5472 Number of ASes announcing only one prefix 1726 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 73138176 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'). --- 08Nov02 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 115332 82897 32435 28.1% All ASes AS3908 1082 564 518 47.9% SUPERNETASBLK SuperNet, Inc. AS701 1726 1253 473 27.4% ALTERNET-AS UUNET Technologies, Inc. AS7843 787 338 449 57.1% ADELPHIA-AS Adelphia Corp. AS7018 1341 990 351 26.2% ATT-INTERNET4 AT&T WorldNet Services AS6197 453 107 346 76.4% BATI-ATL BellSouth Network Solutions, Inc AS18566 341 4 337 98.8% COVAD Covad Communications AS4323 512 176 336 65.6% TW-COMM Time Warner Communications, Inc. AS1221 1193 868 325 27.2% ASN-TELSTRA Telstra Pty Ltd AS209 627 331 296 47.2% ASN-QWEST Qwest AS6347 358 81 277 77.4% DIAMOND SAVVIS Communications Corporation AS7046 588 312 276 46.9% UUNET-CUSTOMER UUNET Technologies, Inc. AS4355 398 134 264 66.3% ERMS-EARTHLNK EARTHLINK, INC AS4151 337 90 247 73.3% USDA-1 USDA AS705 441 207 234 53.1% ASN-ALTERNET UUNET Technologies, Inc. AS1239 893 662 231 25.9% SPRINTLINK Sprint AS6198 409 179 230 56.2% BATI-MIA BellSouth Network Solutions, Inc AS852 694 468 226 32.6% ASN852 Telus Advanced Communications AS1 656 438 218 33.2% GNTY-1 Genuity AS4814 233 15 218 93.6% CHINANET-BEIJING-AP China Telecom (Group)Beijing Telecom CompanyBeijing China AS6140 262 65 197 75.2% IMPSAT-USA ImpSat USA, Inc. AS22927 216 20 196 90.7% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS17676 227 32 195 85.9% GIGAINFRA APNIC ASN block AS17557 317 126 191 60.3% PKTELECOM-AS-AP APNIC ASN block AS6595 246 56 190 77.2% DODDSEUR DoD Education Activity Network Assistance Center AS4134 296 114 182 61.5% ERX-CHINALINK Data Communications Bureau AS690 513 336 177 34.5% MERIT-AS-27 Merit Network Inc. AS2048 263 88 175 66.5% LANET-1 State of Louisiana AS7132 241 70 171 71.0% SBIS-AS Southwestern Bell Internet Services AS2548 410 249 161 39.3% ICIX-MD-AS Business Internet, Inc. AS174 291 134 157 54.0% PSINET PSINet Inc. Total 16351 8507 7844 48.0% 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