This report has been generated at Fri Oct 11 21:45:36 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
04-10-02 114025 82170
05-10-02 114135 82280
06-10-02 114325 82318
07-10-02 114398 82256
08-10-02 114434 82620
09-10-02 114687 82510
10-10-02 114415 82589
11-10-02 114611 82621
Possible Bogus Routes
192.0.0.0/24 AS3215 AS3215 France Telecom Transpac
AS Summary
13857 Number of ASes in routing system
5394 Number of ASes announcing only one prefix
1762 Largest number of prefixes announced by an AS
AS701 : ALTERNET-AS UUNET Technologies, Inc.
73081088 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').
--- 11Oct02 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 114736 82545 32191 28.1% All ASes
AS4637 703 119 584 83.1% REACH Reach Network Border AS
AS7132 594 71 523 88.0% SBIS-AS Southwestern Bell
Internet Services
AS3908 1036 533 503 48.6% SUPERNETASBLK SuperNet, Inc.
AS701 1762 1277 485 27.5% ALTERNET-AS UUNET
Technologies, Inc.
AS7843 721 327 394 54.6% ADELPHIA-AS Adelphia Corp.
AS7018 1349 992 357 26.5% ATT-INTERNET4 AT&T WorldNet
Services
AS4323 519 182 337 64.9% TW-COMM Time Warner
Communications, Inc.
AS1221 1206 886 320 26.5% ASN-TELSTRA Telstra Pty Ltd
AS18566 298 4 294 98.7% COVAD Covad Communications
AS852 736 457 279 37.9% ASN852 Telus Advanced
Communications
AS6347 342 77 265 77.5% DIAMOND SAVVIS Communications
Corporation
AS4151 292 37 255 87.3% USDA-1 USDA
AS6197 392 140 252 64.3% BATI-ATL BellSouth Network
Solutions, Inc
AS4355 370 126 244 65.9% ERMS-EARTHLNK EARTHLINK, INC
AS7046 574 337 237 41.3% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS209 573 337 236 41.2% ASN-QWEST Qwest
AS1239 874 655 219 25.1% SprintLink Sprint
AS1 652 437 215 33.0% GNTY-1 Genuity
AS4814 225 15 210 93.3% CHINANET-BEIJING-AP China
Telecom (Group)Beijing
Telecom CompanyBeijing China
AS705 409 201 208 50.9% ASN-ALTERNET UUNET
Technologies, Inc.
AS22927 215 20 195 90.7% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS6595 248 57 191 77.0% DODDSEUR DoD Education
Activity Network Assistance
Center
AS17676 224 34 190 84.8% GIGAINFRA APNIC ASN block
AS690 518 329 189 36.5% NSFNET-T3-RT-AS Merit Network
Inc.
AS4134 293 111 182 62.1% ERX-CHINALINK Data
Communications Bureau
AS17557 293 115 178 60.8% PKTELECOM-AS-AP APNIC ASN
block
AS6198 396 221 175 44.2% BATI-MIA BellSouth Network
Solutions, Inc
AS2048 262 89 173 66.0% LANET-1 State of Louisiana
AS2548 438 270 168 38.4% ICIX-MD-AS Business Internet,
Inc.
AS174 298 133 165 55.4% PSINET PSINet Inc.
Total 16812 8589 8223 48.9% Top 30 total
Please see http://www.cidr-report.org for the full report