This report has been generated at Fri Nov 29 21:45:21 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
22-11-02 116795 84759
23-11-02 117137 84733
24-11-02 117342 84973
25-11-02 117875 84933
26-11-02 117560 85077
27-11-02 117565 85161
28-11-02 117576 84918
29-11-02 117628 85008
AS Summary
14099 Number of ASes in routing system
5541 Number of ASes announcing only one prefix
2403 Largest number of prefixes announced by an AS
AS3908 : SUPERNETASBLK SuperNet, Inc.
72949760 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').
--- 29Nov02 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 117621 84999 32622 27.7% All ASes
AS3908 2403 1314 1089 45.3% SUPERNETASBLK SuperNet, Inc.
AS701 1714 1237 477 27.8% ALTERNET-AS UUNET
Technologies, Inc.
AS18566 377 5 372 98.7% COVAD Covad Communications
AS7018 1406 1038 368 26.2% ATT-INTERNET4 AT&T WorldNet
Services
AS7843 664 300 364 54.8% ADELPHIA-AS Adelphia Corp.
AS4323 526 184 342 65.0% TW-COMM Time Warner
Communications, Inc.
AS6197 460 123 337 73.3% BATI-ATL BellSouth Network
Solutions, Inc
AS1221 1176 853 323 27.5% ASN-TELSTRA Telstra Pty Ltd
AS7046 585 296 289 49.4% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS6347 358 81 277 77.4% DIAMOND SAVVIS Communications
Corporation
AS4355 403 136 267 66.3% ERMS-EARTHLNK EARTHLINK, INC
AS22927 275 20 255 92.7% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS1239 911 658 253 27.8% SPRINTLINK Sprint
AS6198 420 167 253 60.2% BATI-MIA BellSouth Network
Solutions, Inc
AS705 439 206 233 53.1% ASN-ALTERNET UUNET
Technologies, Inc.
AS4814 248 15 233 94.0% CHINANET-BEIJING-AP China
Telecom (Group)
AS1 663 440 223 33.6% GNTY-1 Genuity
AS4151 352 149 203 57.7% USDA-1 USDA
AS852 669 468 201 30.0% ASN852 Telus Advanced
Communications
AS17557 314 123 191 60.8% PKTELECOM-AS-AP Pakistan
Telecom
AS6595 243 58 185 76.1% DODDSEUR DoD Education
Activity Network Assistance
Center
AS4134 299 117 182 60.9% ERX-CHINALINK Data
Communications Bureau
AS209 519 338 181 34.9% ASN-QWEST Qwest
AS17676 230 50 180 78.3% GIGAINFRA XTAGE CORPORATION
AS690 506 334 172 34.0% MERIT-AS-27 Merit Network Inc.
AS2048 260 88 172 66.2% LANET-1 State of Louisiana
AS6140 268 103 165 61.6% IMPSAT-USA ImpSat
AS6327 182 33 149 81.9% SHAWFIBER Shaw Fiberlink
Limited
AS7132 215 67 148 68.8% SBIS-AS Southwestern Bell
Internet Services
AS2386 364 223 141 38.7% INS-AS AT&T Data
Communications Services
Total 17449 9224 8225 47.1% Top 30 total
Please see http://www.cidr-report.org for the full report