This report has been generated at Sun Sep 29 06:32:47 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://www.cidr-report.org for a current version of this report.
Recent Table History
Date Prefixes CIDR Agg
22-09-02 121438 87731
23-09-02 121323 87980
24-09-02 121407 88246
25-09-02 121566 88349
26-09-02 121459 87822
27-09-02 122059 87644
28-09-02 123673 89338
29-09-02 123685 89454
Possible Bogus Routes
10.5.5.0/30 AS11537 ABILENE University Corporation for Advanced Internet Development
10.11.11.0/30 AS11537 ABILENE University Corporation for Advanced Internet Development
10.33.0.0/23 AS174 PSINET PSINet Inc.
10.33.8.0/24 AS174 PSINET PSINet Inc.
39.0.0.0/8 AS4554 EP0-BLK-ASNBLOCK-4 Exchange Point Blocks
AS Summary
13991 Number of ASes in routing system
5313 Number of ASes announcing only one prefix
1940 Largest number of prefixes announced by an AS
AS174 : PSINET PSINet Inc.
73212416 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').
--- 29Sep02 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 123655 89454 34201 27.7% All ASes
AS209 1818 1042 776 42.7% ASN-QWEST Qwest
AS3908 1124 622 502 44.7% SUPERNETASBLK SuperNet, Inc.
AS701 1786 1286 500 28.0% ALTERNET-AS UUNET
Technologies, Inc.
AS2548 1582 1119 463 29.3% ICIX-MD-AS Business Internet,
Inc.
AS7132 603 140 463 76.8% SBIS-AS Southwestern Bell
Internet Services
AS174 1940 1520 420 21.6% PSINET PSINet Inc.
AS7018 1360 959 401 29.5% ATT-INTERNET4 AT&T WorldNet
Services
AS1221 1306 940 366 28.0% ASN-TELSTRA Telstra Pty Ltd
AS4323 647 305 342 52.9% TW-COMM Time Warner
Communications, Inc.
AS7843 712 410 302 42.4% ADELPHIA-AS Adelphia Corp.
AS852 758 458 300 39.6% ASN852 Telus Advanced
Communications
AS6197 383 97 286 74.7% BATI-ATL BellSouth Network
Solutions, Inc
AS7046 585 312 273 46.7% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS18566 273 4 269 98.5% COVAD Covad Communications
AS4151 279 32 247 88.5% USDA-1 USDA
AS4355 383 145 238 62.1% ERMS-EARTHLNK EARTHLINK, INC
AS1 669 447 222 33.2% GNTY-1 Genuity
AS6347 393 173 220 56.0% DIAMOND SAVVIS Communications
Corporation
AS4814 255 37 218 85.5% CHINANET-BEIJING-AP China
Telecom (Group)Beijing
Telecom CompanyBeijing China
AS705 409 199 210 51.3% ASN-ALTERNET UUNET
Technologies, Inc.
AS1239 849 652 197 23.2% SprintLink Sprint
AS22927 215 20 195 90.7% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS690 518 325 193 37.3% NSFNET-T3-RT-AS Merit Network
Inc.
AS6595 250 68 182 72.8% DODDSEUR DoD Education
Activity Network Assistance
Center
AS4134 302 122 180 59.6% ERX-CHINALINK Data
Communications Bureau
AS2386 421 243 178 42.3% INS-AS AT&T Data
Communications Services
AS3356 389 212 177 45.5% LEVEL3 Level 3 Communications,
LLC
AS1791 184 21 163 88.6% SPRINTLINK3 Sprint Government
Systems Division
AS6327 180 20 160 88.9% SHAWFIBER Shaw Fiberlink
Limited
AS376 337 184 153 45.4% RISQ-AS Reseau
Interordinateurs Scientique
Quebecois (RISQ)
Total 20910 12114 8796 42.1% Top 30 total
Please see http://www.cidr-report.org for the full report