This report has been generated at Fri Nov 8 21:47:30 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
01-11-02 115442 82842
02-11-02 115409 82853
03-11-02 115133 82798
04-11-02 115076 82886
05-11-02 115280 82945
06-11-02 115314 82968
07-11-02 115370 82934
08-11-02 115262 82976
AS Summary
13984 Number of ASes in routing system
5472 Number of ASes announcing only one prefix
1726 Largest number of prefixes announced by an AS
AS701 : ALTERNET-AS UUNET Technologies, Inc.
73138176 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').
--- 08Nov02 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 115332 82897 32435 28.1% All ASes
AS3908 1082 564 518 47.9% SUPERNETASBLK SuperNet, Inc.
AS701 1726 1253 473 27.4% ALTERNET-AS UUNET
Technologies, Inc.
AS7843 787 338 449 57.1% ADELPHIA-AS Adelphia Corp.
AS7018 1341 990 351 26.2% ATT-INTERNET4 AT&T WorldNet
Services
AS6197 453 107 346 76.4% BATI-ATL BellSouth Network
Solutions, Inc
AS18566 341 4 337 98.8% COVAD Covad Communications
AS4323 512 176 336 65.6% TW-COMM Time Warner
Communications, Inc.
AS1221 1193 868 325 27.2% ASN-TELSTRA Telstra Pty Ltd
AS209 627 331 296 47.2% ASN-QWEST Qwest
AS6347 358 81 277 77.4% DIAMOND SAVVIS Communications
Corporation
AS7046 588 312 276 46.9% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS4355 398 134 264 66.3% ERMS-EARTHLNK EARTHLINK, INC
AS4151 337 90 247 73.3% USDA-1 USDA
AS705 441 207 234 53.1% ASN-ALTERNET UUNET
Technologies, Inc.
AS1239 893 662 231 25.9% SPRINTLINK Sprint
AS6198 409 179 230 56.2% BATI-MIA BellSouth Network
Solutions, Inc
AS852 694 468 226 32.6% ASN852 Telus Advanced
Communications
AS1 656 438 218 33.2% GNTY-1 Genuity
AS4814 233 15 218 93.6% CHINANET-BEIJING-AP China
Telecom (Group)Beijing
Telecom CompanyBeijing China
AS6140 262 65 197 75.2% IMPSAT-USA ImpSat USA, Inc.
AS22927 216 20 196 90.7% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS17676 227 32 195 85.9% GIGAINFRA APNIC ASN block
AS17557 317 126 191 60.3% PKTELECOM-AS-AP APNIC ASN
block
AS6595 246 56 190 77.2% DODDSEUR DoD Education
Activity Network Assistance
Center
AS4134 296 114 182 61.5% ERX-CHINALINK Data
Communications Bureau
AS690 513 336 177 34.5% MERIT-AS-27 Merit Network Inc.
AS2048 263 88 175 66.5% LANET-1 State of Louisiana
AS7132 241 70 171 71.0% SBIS-AS Southwestern Bell
Internet Services
AS2548 410 249 161 39.3% ICIX-MD-AS Business Internet,
Inc.
AS174 291 134 157 54.0% PSINET PSINet Inc.
Total 16351 8507 7844 48.0% Top 30 total
Please see http://www.cidr-report.org for the full report