This report has been generated at Fri Apr 11 21:46:50 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 04-04-03 121205 86530 05-04-03 121077 86591 06-04-03 120820 86365 07-04-03 120917 86463 08-04-03 121020 86473 09-04-03 121144 86561 10-04-03 120942 86620 11-04-03 121008 86701 AS Summary 14913 Number of ASes in routing system 5884 Number of ASes announcing only one prefix 1564 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 73154560 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'). --- 11Apr03 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 121213 86696 34517 28.5% All ASes AS4151 691 75 616 89.1% USDA-1 USDA AS7843 642 188 454 70.7% ADELPHIA-AS Adelphia Corp. AS701 1564 1111 453 29.0% ALTERNET-AS UUNET Technologies, Inc. AS4323 567 167 400 70.5% TW-COMM Time Warner Communications, Inc. AS7132 802 414 388 48.4% SBIS-AS SBC Internet Services - Southwest AS3908 911 529 382 41.9% SUPERNETASBLK SuperNet, Inc. AS7018 1351 976 375 27.8% ATT-INTERNET4 AT&T WorldNet Services AS1221 1107 797 310 28.0% ASN-TELSTRA Telstra Pty Ltd AS1239 965 682 283 29.3% SPRINTLINK Sprint AS6198 457 181 276 60.4% BATI-MIA BellSouth Network Solutions, Inc AS6197 476 202 274 57.6% BATI-ATL BellSouth Network Solutions, Inc AS705 487 215 272 55.9% ALTERNET-AS UUNET Technologies, Inc. AS22927 286 14 272 95.1% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS4355 373 115 258 69.2% ERMS-EARTHLNK EARTHLINK, INC AS4814 270 16 254 94.1% CHINANET-BEIJING-AP China Telecom (Group) AS17557 378 144 234 61.9% PKTELECOM-AS-AP Pakistan Telecom AS209 529 303 226 42.7% ASN-QWEST Qwest AS2386 507 282 225 44.4% INS-AS AT&T Data Communications Services AS17676 237 29 208 87.8% GIGAINFRA XTAGE CORPORATION AS27364 266 59 207 77.8% ACS-INTERNET Armstrong Cable Services AS11305 341 143 198 58.1% INTERLAND-NET1 Interland Incorporated AS22773 203 8 195 96.1% CCINET-2 Cox Communications Inc. Atlanta AS690 495 316 179 36.2% MERIT-AS-27 Merit Network Inc. AS3561 513 335 178 34.7% CWUSA Cable & Wireless USA AS6347 367 190 177 48.2% DIAMOND SAVVIS Communications Corporation AS2048 254 84 170 66.9% LANET-1 State of Louisiana AS22291 241 79 162 67.2% CHARTER-LA Charter Communications AS6327 190 34 156 82.1% SHAWFIBER Shaw Fiberlink Limited AS7303 242 93 149 61.6% AR-TAST-LACNIC Telecom Argentina Stet-France Telecom S.A. AS3215 321 175 146 45.5% AS3215 France Telecom Transpac Total 16033 7956 8077 50.4% 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@apops.net routing-wg@ripe.net afnog@afnog.org