This report has been generated at Fri Jan 10 21:49:53 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 03-01-03 117672 85180 04-01-03 117848 85149 05-01-03 117767 85091 06-01-03 117793 85127 07-01-03 117802 85131 08-01-03 117947 85108 09-01-03 118044 85215 10-01-03 118118 85385 AS Summary 14310 Number of ASes in routing system 5626 Number of ASes announcing only one prefix 1606 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 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'). --- 10Jan03 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 118165 85303 32862 27.8% All ASes AS3908 1175 684 491 41.8% SUPERNETASBLK SuperNet, Inc. AS18566 422 5 417 98.8% COVAD Covad Communications AS7018 1450 1035 415 28.6% ATT-INTERNET4 AT&T WorldNet Services AS701 1606 1193 413 25.7% ALTERNET-AS UUNET Technologies, Inc. AS4323 526 188 338 64.3% TW-COMM Time Warner Communications, Inc. AS7843 628 291 337 53.7% ADELPHIA-AS Adelphia Corp. AS6197 458 150 308 67.2% BATI-ATL BellSouth Network Solutions, Inc AS1221 1145 844 301 26.3% ASN-TELSTRA Telstra Pty Ltd AS1239 968 679 289 29.9% SPRINTLINK Sprint AS6347 369 85 284 77.0% DIAMOND SAVVIS Communications Corporation AS4355 406 135 271 66.7% ERMS-EARTHLNK EARTHLINK, INC AS7046 554 286 268 48.4% UUNET-CUSTOMER UUNET Technologies, Inc. AS22927 289 22 267 92.4% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS705 426 186 240 56.3% ASN-ALTERNET UUNET Technologies, Inc. AS4814 251 15 236 94.0% CHINANET-BEIJING-AP China Telecom (Group) AS1 661 439 222 33.6% GNTY-1 Genuity AS6198 422 200 222 52.6% BATI-MIA BellSouth Network Solutions, Inc AS17676 229 24 205 89.5% GIGAINFRA XTAGE CORPORATION AS22291 227 29 198 87.2% CHARTER-LA Charter Communications AS690 513 319 194 37.8% MERIT-AS-27 Merit Network Inc. AS4151 328 136 192 58.5% USDA-1 USDA AS209 518 330 188 36.3% ASN-QWEST Qwest AS6140 314 126 188 59.9% IMPSAT-USA ImpSat AS4134 290 107 183 63.1% ERX-CHINALINK Data Communications Bureau AS852 627 445 182 29.0% ASN852 Telus Advanced Communications AS2048 260 87 173 66.5% LANET-1 State of Louisiana AS2386 381 222 159 41.7% INS-AS AT&T Data Communications Services AS6327 185 34 151 81.6% SHAWFIBER Shaw Fiberlink Limited AS17557 323 179 144 44.6% PKTELECOM-AS-AP Pakistan Telecom AS3215 315 175 140 44.4% AS3215 France Telecom Transpac Total 16266 8650 7616 46.8% 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