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The Cidr Report
This report has been generated at Fri Sep 13 20:32:14 2002 AEST.
The report analyses the BGP Routing Table of the Route-Views router
and generates a report on aggregation potential within the table.
Check http://bgp.potaroo.net/cidr for a current version of this report.
Recent Table History
Date Prefixes
06-09-02 121201
07-09-02 121195
08-09-02 121134
09-09-02 121168
10-09-02 121129
11-09-02 121290
12-09-02 121145
13-09-02 121338
Possible Bogus Routes
39.0.0.0/8 AS4554 EP0-BLK-ASNBLOCK-4 Exchange Point Blocks
AS Summary
13879 Number of ASes in routing system
5303 Number of ASes announcing only one prefix
1798 Largest number of prefixes announced by an AS
AS209 : ASN-QWEST Qwest
73089280 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 not
proposed across non-advertised address space ('holes').
--- 13Sep02 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 121140 87526 33614 27.7% All ASes
AS209 1798 1040 758 42.2% ASN-QWEST Qwest
AS3908 1134 633 501 44.2% SUPERNETASBLK SuperNet, Inc.
AS2548 1575 1125 450 28.6% ICIX-MD-AS Business Internet,
Inc.
AS7132 603 185 418 69.3% SBIS-AS Southwestern Bell
Internet Services
AS701 1761 1349 412 23.4% ALTERNET-AS UUNET
Technologies, Inc.
AS7018 1348 958 390 28.9% ATT-INTERNET4 AT&T WorldNet
Services
AS1221 1302 940 362 27.8% ASN-TELSTRA Telstra Pty Ltd
AS4323 648 300 348 53.7% TW-COMM Time Warner
Communications, Inc.
AS7843 674 374 300 44.5% ADELPHIA-AS Adelphia Corp.
AS6197 382 85 297 77.7% BATI-ATL BellSouth Network
Solutions, Inc
AS7046 612 316 296 48.4% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS852 738 457 281 38.1% ASN852 Telus Advanced
Communications
AS18566 270 4 266 98.5% COVAD Covad Communications
AS6347 396 139 257 64.9% DIAMOND SAVVIS Communications
Corporation
AS4151 283 32 251 88.7% USDA-1 USDA
AS1 681 447 234 34.4% GNTY-1 Genuity
AS4814 229 30 199 86.9% CHINANET-BEIJING-AP China
Telecom (Group)Beijing
Telecom CompanyBeijing China
AS690 519 326 193 37.2% NSFNET-T3-RT-AS Merit Network
Inc.
AS4355 360 172 188 52.2% ERMS-EARTHLNK EARTHLINK, INC
AS1239 844 657 187 22.2% SprintLink Sprint
AS9942 248 71 177 71.4% COMINDICO-AP COMindico
Australia
AS2386 416 240 176 42.3% INS-AS AT&T Data
Communications Services
AS4134 302 133 169 56.0% ERX-CHINALINK Data
Communications Bureau
AS6595 246 78 168 68.3% DODDSEUR DoD Education
Activity Network Assistance
Center
AS3356 389 222 167 42.9% LEVEL3 Level 3 Communications,
LLC
AS1791 186 23 163 87.6% SPRINTLINK3 Sprint Government
Systems Division
AS11371 169 7 162 95.9% UUNET-AS-11371 UUNET
Technologies, Inc.
AS1564 162 4 158 97.5% HQ, 5th Signal Command
AS6327 171 16 155 90.6% SHAWFIBER Shaw Fiberlink
Limited
AS17676 220 65 155 70.5% GIGAINFRA APNIC ASN block
Total 18666 10428 8238 44.1% Top 30 total
Please see http://bgp.potaroo.net/cidr for the full report
------------------------------------
Copies of this report are mailed to:
nanog at merit.edu
eof-list at ripe.net
apops at lists.apnic.net
routing-wg at ripe.net
afnog at afnog.org
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