This report has been generated at Fri Feb 21 21:46:27 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 14-02-03 119071 85433 15-02-03 119072 85385 16-02-03 118946 85348 17-02-03 118884 85299 18-02-03 118939 85352 19-02-03 119053 85338 20-02-03 119156 85478 21-02-03 119400 85502 AS Summary 14614 Number of ASes in routing system 5749 Number of ASes announcing only one prefix 1577 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 73048064 Largest address span announced by an AS (/32s) AS568 : SUMNET-AS DISO-UNRRA Possible Bogus Routes 10.0.0.0/8 AS4637 REACH Reach Network Border AS 192.168.0.0/16 AS4637 REACH Reach Network Border AS 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'). --- 21Feb03 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 119491 85471 34020 28.5% All ASes AS3908 1062 565 497 46.8% SUPERNETASBLK SuperNet, Inc. AS18566 482 6 476 98.8% COVAD Covad Communications AS701 1577 1145 432 27.4% ALTERNET-AS UUNET Technologies, Inc. AS4151 524 92 432 82.4% USDA-1 USDA AS7018 1427 1034 393 27.5% ATT-INTERNET4 AT&T WorldNet Services AS4323 529 170 359 67.9% TW-COMM Time Warner Communications, Inc. AS7843 569 234 335 58.9% ADELPHIA-AS Adelphia Corp. AS7046 578 246 332 57.4% UUNET-CUSTOMER UUNET Technologies, Inc. AS6197 478 158 320 66.9% BATI-ATL BellSouth Network Solutions, Inc AS1221 1119 821 298 26.6% ASN-TELSTRA Telstra Pty Ltd AS4355 402 120 282 70.1% ERMS-EARTHLNK EARTHLINK, INC AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS1239 960 680 280 29.2% SPRINTLINK Sprint AS705 447 194 253 56.6% ASN-ALTERNET UUNET Technologies, Inc. AS4814 261 15 246 94.3% CHINANET-BEIJING-AP China Telecom (Group) AS1 666 435 231 34.7% GNTY-1 Genuity AS6347 330 101 229 69.4% DIAMOND SAVVIS Communications Corporation AS6198 433 204 229 52.9% BATI-MIA BellSouth Network Solutions, Inc AS22291 243 32 211 86.8% CHARTER-LA Charter Communications AS17676 227 26 201 88.5% GIGAINFRA XTAGE CORPORATION AS690 498 308 190 38.2% MERIT-AS-27 Merit Network Inc. AS209 523 335 188 35.9% ASN-QWEST Qwest AS4134 304 117 187 61.5% CHINANET-BACKBONE No.31,Jin-rong Street AS2386 443 263 180 40.6% INS-AS AT&T Data Communications Services AS2048 260 87 173 66.5% LANET-1 State of Louisiana AS852 604 445 159 26.3% ASN852 Telus Advanced Communications AS7303 240 90 150 62.5% AR-TAST-LACNIC Telecom Argentina Stet-France Telecom S.A. AS17557 340 190 150 44.1% PKTELECOM-AS-AP Pakistan Telecom AS22773 181 31 150 82.9% CCINET-2 Cox Communications Inc. Atlanta AS6140 283 137 146 51.6% IMPSAT-USA ImpSat Total 16285 8295 7990 49.1% 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@apops.net routing-wg@ripe.net afnog@afnog.org