This report has been generated at Fri Oct 25 21:44:47 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
18-10-02 114704 82884
19-10-02 115116 82872
20-10-02 114956 82781
21-10-02 114861 82208
22-10-02 115010 82457
23-10-02 115086 82530
24-10-02 115044 82513
25-10-02 114752 82519
AS Summary
13926 Number of ASes in routing system
5448 Number of ASes announcing only one prefix
1750 Largest number of prefixes announced by an AS
AS701 : ALTERNET-AS UUNET Technologies, Inc.
73146368 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').
--- 25Oct02 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 115124 82508 32616 28.3% All ASes
AS3908 1062 559 503 47.4% SUPERNETASBLK SuperNet, Inc.
AS701 1750 1260 490 28.0% ALTERNET-AS UUNET
Technologies, Inc.
AS7843 759 337 422 55.6% ADELPHIA-AS Adelphia Corp.
AS2828 472 102 370 78.4% XO-AS15 XO Communications
AS7018 1361 1003 358 26.3% ATT-INTERNET4 AT&T WorldNet
Services
AS7132 415 70 345 83.1% SBIS-AS Southwestern Bell
Internet Services
AS6198 419 80 339 80.9% BATI-MIA BellSouth Network
Solutions, Inc
AS4323 519 181 338 65.1% TW-COMM Time Warner
Communications, Inc.
AS1221 1196 874 322 26.9% ASN-TELSTRA Telstra Pty Ltd
AS18566 326 4 322 98.8% COVAD Covad Communications
AS7046 587 299 288 49.1% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS852 737 458 279 37.9% ASN852 Telus Advanced
Communications
AS6347 350 75 275 78.6% DIAMOND SAVVIS Communications
Corporation
AS4355 385 125 260 67.5% ERMS-EARTHLNK EARTHLINK, INC
AS705 442 203 239 54.1% ASN-ALTERNET UUNET
Technologies, Inc.
AS4151 292 55 237 81.2% USDA-1 USDA
AS209 572 338 234 40.9% ASN-QWEST Qwest
AS1239 885 663 222 25.1% SPRINTLINK Sprint
AS1 651 434 217 33.3% GNTY-1 Genuity
AS4814 232 15 217 93.5% CHINANET-BEIJING-AP China
Telecom (Group)Beijing
Telecom CompanyBeijing China
AS17557 314 118 196 62.4% PKTELECOM-AS-AP APNIC ASN
block
AS22927 215 20 195 90.7% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS690 517 324 193 37.3% MERIT-AS-27 Merit Network Inc.
AS6140 258 65 193 74.8% IMPSAT-USA ImpSat USA, Inc.
AS6595 249 56 193 77.5% DODDSEUR DoD Education
Activity Network Assistance
Center
AS17676 224 34 190 84.8% GIGAINFRA APNIC ASN block
AS4134 296 113 183 61.8% ERX-CHINALINK Data
Communications Bureau
AS2048 265 88 177 66.8% LANET-1 State of Louisiana
AS174 290 133 157 54.1% PSINET PSINet Inc.
AS2548 401 244 157 39.2% ICIX-MD-AS Business Internet,
Inc.
Total 16441 8330 8111 49.3% Top 30 total
Please see http://www.cidr-report.org for the full report