The Cidr Report
- Date: Fri, 17 Jan 2003 22:00:01 +1100 (EST)
This report has been generated at Fri Jan 17 21:50:49 2003 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
10-01-03 118118 85265
11-01-03 118137 85264
12-01-03 118098 85311
13-01-03 118022 85338
14-01-03 118150 85261
15-01-03 118309 85199
16-01-03 118188 85195
17-01-03 118250 85247
AS Summary
14387 Number of ASes in routing system
5650 Number of ASes announcing only one prefix
1586 Largest number of prefixes announced by an AS
AS701 : ALTERNET-AS UUNET Technologies, Inc.
73080832 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').
--- 17Jan03 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 118475 85309 33166 28.0% All ASes
AS3908 1187 693 494 41.6% SUPERNETASBLK SuperNet, Inc.
AS18566 430 5 425 98.8% COVAD Covad Communications
AS701 1586 1176 410 25.9% ALTERNET-AS UUNET
Technologies, Inc.
AS7018 1442 1043 399 27.7% ATT-INTERNET4 AT&T WorldNet
Services
AS4323 532 189 343 64.5% TW-COMM Time Warner
Communications, Inc.
AS7843 609 267 342 56.2% ADELPHIA-AS Adelphia Corp.
AS6197 464 151 313 67.5% BATI-ATL BellSouth Network
Solutions, Inc
AS1221 1137 839 298 26.2% ASN-TELSTRA Telstra Pty Ltd
AS1239 963 679 284 29.5% SPRINTLINK Sprint
AS6347 366 85 281 76.8% DIAMOND SAVVIS Communications
Corporation
AS4355 408 133 275 67.4% ERMS-EARTHLNK EARTHLINK, INC
AS4151 329 58 271 82.4% USDA-1 USDA
AS7046 550 282 268 48.7% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS22927 283 22 261 92.2% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS705 426 186 240 56.3% ASN-ALTERNET UUNET
Technologies, Inc.
AS4814 251 15 236 94.0% CHINANET-BEIJING-AP China
Telecom (Group)
AS6198 426 202 224 52.6% BATI-MIA BellSouth Network
Solutions, Inc
AS1 654 433 221 33.8% GNTY-1 Genuity
AS17676 225 26 199 88.4% GIGAINFRA XTAGE CORPORATION
AS22291 227 29 198 87.2% CHARTER-LA Charter
Communications
AS690 521 326 195 37.4% MERIT-AS-27 Merit Network Inc.
AS6140 319 126 193 60.5% IMPSAT-USA ImpSat
AS209 517 329 188 36.4% ASN-QWEST Qwest
AS4134 296 112 184 62.2% ERX-CHINALINK Data
Communications Bureau
AS2048 260 86 174 66.9% LANET-1 State of Louisiana
AS2386 410 243 167 40.7% INS-AS AT&T Data
Communications Services
AS852 608 446 162 26.6% ASN852 Telus Advanced
Communications
AS6327 185 34 151 81.6% SHAWFIBER Shaw Fiberlink
Limited
AS11492 297 155 142 47.8% CABLEONE CABLE ONE
AS3215 314 174 140 44.6% AS3215 France Telecom
Transpac
Total 16222 8544 7678 47.3% Top 30 total
Please see http://www.cidr-report.org for the full report
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