This report has been generated at Fri Nov 15 21:51:38 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 08-11-02 115262 82970 09-11-02 115386 83004 10-11-02 115366 82989 11-11-02 115336 83068 12-11-02 115307 83083 13-11-02 115426 83148 14-11-02 115439 83284 15-11-02 115525 83493 AS Summary 14038 Number of ASes in routing system 5503 Number of ASes announcing only one prefix 1706 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 73007104 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'). --- 15Nov02 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 115835 83543 32292 27.9% All ASes AS3908 1083 559 524 48.4% SUPERNETASBLK SuperNet, Inc. AS701 1706 1251 455 26.7% ALTERNET-AS UUNET Technologies, Inc. AS7843 744 299 445 59.8% ADELPHIA-AS Adelphia Corp. AS7018 1367 1003 364 26.6% ATT-INTERNET4 AT&T WorldNet Services AS6197 458 108 350 76.4% BATI-ATL BellSouth Network Solutions, Inc AS18566 354 6 348 98.3% COVAD Covad Communications AS4323 523 183 340 65.0% TW-COMM Time Warner Communications, Inc. AS1221 1190 865 325 27.3% ASN-TELSTRA Telstra Pty Ltd AS7046 589 303 286 48.6% UUNET-CUSTOMER UUNET Technologies, Inc. AS6347 358 81 277 77.4% DIAMOND SAVVIS Communications Corporation AS4355 402 135 267 66.4% ERMS-EARTHLNK EARTHLINK, INC AS1239 900 659 241 26.8% SPRINTLINK Sprint AS852 710 469 241 33.9% ASN852 Telus Advanced Communications AS4151 343 106 237 69.1% USDA-1 USDA AS22927 283 48 235 83.0% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS705 437 203 234 53.5% ASN-ALTERNET UUNET Technologies, Inc. AS209 564 331 233 41.3% ASN-QWEST Qwest AS6198 409 179 230 56.2% BATI-MIA BellSouth Network Solutions, Inc AS4814 234 15 219 93.6% CHINANET-BEIJING-AP China Telecom (Group)Beijing Telecom CompanyBeijing China AS1 658 441 217 33.0% GNTY-1 Genuity AS6140 268 67 201 75.0% IMPSAT-USA ImpSat USA, Inc. AS17676 227 30 197 86.8% GIGAINFRA APNIC ASN block AS6595 248 57 191 77.0% DODDSEUR DoD Education Activity Network Assistance Center AS17557 310 122 188 60.6% PKTELECOM-AS-AP APNIC ASN block AS4134 297 114 183 61.6% ERX-CHINALINK Data Communications Bureau AS690 506 327 179 35.4% MERIT-AS-27 Merit Network Inc. AS2048 263 87 176 66.9% LANET-1 State of Louisiana AS7132 232 67 165 71.1% SBIS-AS Southwestern Bell Internet Services AS174 295 136 159 53.9% PSINET PSINet Inc. AS2548 401 243 158 39.4% ICIX-MD-AS Business Internet, Inc. Total 16359 8494 7865 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