This report has been generated at Fri Nov 15 21:51:38 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
08-11-02 115262 82970
09-11-02 115386 83004
10-11-02 115366 82989
11-11-02 115336 83068
12-11-02 115307 83083
13-11-02 115426 83148
14-11-02 115439 83284
15-11-02 115525 83493
AS Summary
14038 Number of ASes in routing system
5503 Number of ASes announcing only one prefix
1706 Largest number of prefixes announced by an AS
AS701 : ALTERNET-AS UUNET Technologies, Inc.
73007104 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').
--- 15Nov02 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 115835 83543 32292 27.9% All ASes
AS3908 1083 559 524 48.4% SUPERNETASBLK SuperNet, Inc.
AS701 1706 1251 455 26.7% ALTERNET-AS UUNET
Technologies, Inc.
AS7843 744 299 445 59.8% ADELPHIA-AS Adelphia Corp.
AS7018 1367 1003 364 26.6% ATT-INTERNET4 AT&T WorldNet
Services
AS6197 458 108 350 76.4% BATI-ATL BellSouth Network
Solutions, Inc
AS18566 354 6 348 98.3% COVAD Covad Communications
AS4323 523 183 340 65.0% TW-COMM Time Warner
Communications, Inc.
AS1221 1190 865 325 27.3% ASN-TELSTRA Telstra Pty Ltd
AS7046 589 303 286 48.6% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS6347 358 81 277 77.4% DIAMOND SAVVIS Communications
Corporation
AS4355 402 135 267 66.4% ERMS-EARTHLNK EARTHLINK, INC
AS1239 900 659 241 26.8% SPRINTLINK Sprint
AS852 710 469 241 33.9% ASN852 Telus Advanced
Communications
AS4151 343 106 237 69.1% USDA-1 USDA
AS22927 283 48 235 83.0% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS705 437 203 234 53.5% ASN-ALTERNET UUNET
Technologies, Inc.
AS209 564 331 233 41.3% ASN-QWEST Qwest
AS6198 409 179 230 56.2% BATI-MIA BellSouth Network
Solutions, Inc
AS4814 234 15 219 93.6% CHINANET-BEIJING-AP China
Telecom (Group)Beijing
Telecom CompanyBeijing China
AS1 658 441 217 33.0% GNTY-1 Genuity
AS6140 268 67 201 75.0% IMPSAT-USA ImpSat USA, Inc.
AS17676 227 30 197 86.8% GIGAINFRA APNIC ASN block
AS6595 248 57 191 77.0% DODDSEUR DoD Education
Activity Network Assistance
Center
AS17557 310 122 188 60.6% PKTELECOM-AS-AP APNIC ASN
block
AS4134 297 114 183 61.6% ERX-CHINALINK Data
Communications Bureau
AS690 506 327 179 35.4% MERIT-AS-27 Merit Network Inc.
AS2048 263 87 176 66.9% LANET-1 State of Louisiana
AS7132 232 67 165 71.1% SBIS-AS Southwestern Bell
Internet Services
AS174 295 136 159 53.9% PSINET PSINet Inc.
AS2548 401 243 158 39.4% ICIX-MD-AS Business Internet,
Inc.
Total 16359 8494 7865 48.1% Top 30 total
Please see http://www.cidr-report.org for the full report