This report has been generated at Mon Sep 16 18:33:13 2002 AEST. The report analyses the BGP Routing Table of the Route-Views router and generates a report on aggregation potential within the table. Check http://bgp.potaroo.net/cidr for a current version of this report. Recent Table History Date Prefixes CIDR Agg 09-09-02 121168 88703 10-09-02 121129 88787 11-09-02 121290 88946 12-09-02 121145 87146 13-09-02 121338 87745 14-09-02 121318 87720 15-09-02 121238 87859 16-09-02 122134 87830 Possible Bogus Routes 39.0.0.0/8 AS4554 EP0-BLK-ASNBLOCK-4 Exchange Point Blocks AS Summary 13914 Number of ASes in routing system 5301 Number of ASes announcing only one prefix 1804 Largest number of prefixes announced by an AS AS209 : ASN-QWEST Qwest 73154816 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 not proposed across non-advertised address space ('holes'). --- 16Sep02 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 121976 88656 33320 27.3% All ASes AS209 1804 1042 762 42.2% ASN-QWEST Qwest AS3908 1133 650 483 42.6% SUPERNETASBLK SuperNet, Inc. AS2548 1581 1127 454 28.7% ICIX-MD-AS Business Internet, Inc. AS7132 601 183 418 69.6% SBIS-AS Southwestern Bell Internet Services AS701 1762 1351 411 23.3% ALTERNET-AS UUNET Technologies, Inc. AS7018 1349 959 390 28.9% ATT-INTERNET4 AT&T WorldNet Services AS1221 1301 939 362 27.8% ASN-TELSTRA Telstra Pty Ltd AS4323 645 307 338 52.4% TW-COMM Time Warner Communications, Inc. AS7046 607 312 295 48.6% UUNET-CUSTOMER UUNET Technologies, Inc. AS6197 383 97 286 74.7% BATI-ATL BellSouth Network Solutions, Inc AS852 737 456 281 38.1% ASN852 Telus Advanced Communications AS7843 664 386 278 41.9% ADELPHIA-AS Adelphia Corp. AS18566 270 4 266 98.5% COVAD Covad Communications AS4151 284 32 252 88.7% USDA-1 USDA AS1 682 449 233 34.2% GNTY-1 Genuity AS6347 396 180 216 54.5% DIAMOND SAVVIS Communications Corporation AS4814 233 34 199 85.4% CHINANET-BEIJING-AP China Telecom (Group)Beijing Telecom CompanyBeijing China AS690 519 326 193 37.2% NSFNET-T3-RT-AS Merit Network Inc. AS4355 360 170 190 52.8% ERMS-EARTHLNK EARTHLINK, INC AS1239 851 662 189 22.2% SprintLink Sprint AS2386 418 233 185 44.3% INS-AS AT&T Data Communications Services AS4134 302 118 184 60.9% ERX-CHINALINK Data Communications Bureau AS6595 244 74 170 69.7% DODDSEUR DoD Education Activity Network Assistance Center AS3356 392 226 166 42.3% LEVEL3 Level 3 Communications, LLC AS1791 186 23 163 87.6% SPRINTLINK3 Sprint Government Systems Division AS11371 169 7 162 95.9% UUNET-AS-11371 UUNET Technologies, Inc. AS376 341 184 157 46.0% RISQ-AS Reseau Interordinateurs Scientique Quebecois (RISQ) AS17676 220 65 155 70.5% GIGAINFRA APNIC ASN block AS6539 350 200 150 42.9% GROUPTLCOM GT Group Telecom Services Corp. AS577 424 275 149 35.1% BACOM Bell Advanced Communications Inc. Total 19208 11071 8137 42.4% 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