This report has been generated at Fri Nov 22 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
15-11-02 115525 83541
16-11-02 115876 83482
17-11-02 115903 83487
18-11-02 115816 83543
19-11-02 115965 83826
20-11-02 115962 84457
21-11-02 116704 84654
22-11-02 116795 84742
AS Summary
14074 Number of ASes in routing system
5531 Number of ASes announcing only one prefix
2106 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').
--- 22Nov02 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 117134 84750 32384 27.6% All ASes
AS3908 2106 1243 863 41.0% SUPERNETASBLK SuperNet, Inc.
AS701 1715 1271 444 25.9% ALTERNET-AS UUNET
Technologies, Inc.
AS7843 665 297 368 55.3% ADELPHIA-AS Adelphia Corp.
AS7018 1370 1006 364 26.6% ATT-INTERNET4 AT&T WorldNet
Services
AS18566 367 5 362 98.6% COVAD Covad Communications
AS4323 524 184 340 64.9% TW-COMM Time Warner
Communications, Inc.
AS6197 457 122 335 73.3% BATI-ATL BellSouth Network
Solutions, Inc
AS1221 1183 858 325 27.5% ASN-TELSTRA Telstra Pty Ltd
AS6347 360 80 280 77.8% DIAMOND SAVVIS Communications
Corporation
AS4355 403 136 267 66.3% ERMS-EARTHLNK EARTHLINK, INC
AS7046 584 323 261 44.7% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS22927 275 20 255 92.7% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS209 589 338 251 42.6% ASN-QWEST Qwest
AS1239 910 660 250 27.5% SPRINTLINK Sprint
AS6198 415 167 248 59.8% BATI-MIA BellSouth Network
Solutions, Inc
AS705 436 203 233 53.4% ASN-ALTERNET UUNET
Technologies, Inc.
AS4814 247 15 232 93.9% CHINANET-BEIJING-AP China
Telecom (Group)
AS4151 346 123 223 64.5% USDA-1 USDA
AS1 657 441 216 32.9% GNTY-1 Genuity
AS6140 267 66 201 75.3% IMPSAT-USA ImpSat
AS852 666 467 199 29.9% ASN852 Telus Advanced
Communications
AS17676 229 30 199 86.9% GIGAINFRA XTAGE CORPORATION
AS6595 247 56 191 77.3% DODDSEUR DoD Education
Activity Network Assistance
Center
AS17557 307 122 185 60.3% PKTELECOM-AS-AP Pakistan
Telecom
AS4134 298 116 182 61.1% ERX-CHINALINK Data
Communications Bureau
AS690 507 331 176 34.7% MERIT-AS-27 Merit Network Inc.
AS2048 264 88 176 66.7% LANET-1 State of Louisiana
AS7132 223 67 156 70.0% SBIS-AS Southwestern Bell
Internet Services
AS2548 390 240 150 38.5% ALGX-ATCW-AS Allegiance
Telecom Companies Worldwide
AS6327 181 33 148 81.8% SHAWFIBER Shaw Fiberlink
Limited
Total 17188 9108 8080 47.0% Top 30 total
Please see http://www.cidr-report.org for the full report