This report has been generated at Fri Jan 3 21:45:27 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
27-12-02 117120 84759
28-12-02 117172 84857
29-12-02 117391 84760
30-12-02 117247 84955
31-12-02 117450 85024
01-01-03 117552 85059
02-01-03 117648 85132
03-01-03 117672 85168
AS Summary
14290 Number of ASes in routing system
5618 Number of ASes announcing only one prefix
1610 Largest number of prefixes announced by an AS
AS701 : ALTERNET-AS UUNET Technologies, Inc.
73047040 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').
--- 03Jan03 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 117812 85155 32657 27.7% All ASes
AS3908 1173 689 484 41.3% SUPERNETASBLK SuperNet, Inc.
AS701 1610 1195 415 25.8% ALTERNET-AS UUNET
Technologies, Inc.
AS18566 414 5 409 98.8% COVAD Covad Communications
AS7018 1430 1029 401 28.0% ATT-INTERNET4 AT&T WorldNet
Services
AS4323 532 188 344 64.7% TW-COMM Time Warner
Communications, Inc.
AS7843 622 301 321 51.6% ADELPHIA-AS Adelphia Corp.
AS1221 1146 829 317 27.7% ASN-TELSTRA Telstra Pty Ltd
AS6197 455 150 305 67.0% BATI-ATL BellSouth Network
Solutions, Inc
AS1239 976 687 289 29.6% SPRINTLINK Sprint
AS6347 368 85 283 76.9% DIAMOND SAVVIS Communications
Corporation
AS4355 407 136 271 66.6% ERMS-EARTHLNK EARTHLINK, INC
AS22927 289 22 267 92.4% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS7046 552 291 261 47.3% UUNET-CUSTOMER UUNET
Technologies, Inc.
AS705 422 188 234 55.5% ASN-ALTERNET UUNET
Technologies, Inc.
AS4814 246 15 231 93.9% CHINANET-BEIJING-AP China
Telecom (Group)
AS6198 423 200 223 52.7% BATI-MIA BellSouth Network
Solutions, Inc
AS1 659 437 222 33.7% GNTY-1 Genuity
AS17676 231 26 205 88.7% GIGAINFRA XTAGE CORPORATION
AS22291 226 29 197 87.2% CHARTER-LA Charter
Communications
AS690 513 319 194 37.8% MERIT-AS-27 Merit Network Inc.
AS4151 325 134 191 58.8% USDA-1 USDA
AS6140 315 125 190 60.3% IMPSAT-USA ImpSat
AS209 517 335 182 35.2% ASN-QWEST Qwest
AS4134 290 108 182 62.8% ERX-CHINALINK Data
Communications Bureau
AS852 627 446 181 28.9% ASN852 Telus Advanced
Communications
AS2048 254 84 170 66.9% LANET-1 State of Louisiana
AS2386 387 229 158 40.8% INS-AS AT&T Data
Communications Services
AS6327 185 34 151 81.6% SHAWFIBER Shaw Fiberlink
Limited
AS17557 324 179 145 44.8% PKTELECOM-AS-AP Pakistan
Telecom
AS3215 313 174 139 44.4% AS3215 France Telecom
Transpac
Total 16231 8669 7562 46.6% Top 30 total
Please see http://www.cidr-report.org for the full report