The Cidr Report
- Date: Fri, 7 Mar 2003 22:00:02 +1100 (EST)
This report has been generated at Fri Mar 7 21:46:45 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
28-02-03 119708 85685
01-03-03 119794 85736
02-03-03 119902 85774
03-03-03 119905 85881
04-03-03 120066 86042
05-03-03 120121 86071
06-03-03 120244 86209
07-03-03 120289 86173
AS Summary
14703 Number of ASes in routing system
5787 Number of ASes announcing only one prefix
1586 Largest number of prefixes announced by an AS
AS701 : ALTERNET-AS UUNET Technologies, Inc.
72916992 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').
--- 07Mar03 ---
ASnum NetsNow NetsAggr NetGain % Gain Description
Table 120335 86155 34180 28.4% All ASes
AS3908 1085 567 518 47.7% SUPERNETASBLK SuperNet, Inc.
AS18566 507 9 498 98.2% COVAD Covad Communications
AS701 1586 1146 440 27.7% ALTERNET-AS UUNET
Technologies, Inc.
AS4151 532 106 426 80.1% USDA-1 USDA
AS4323 537 170 367 68.3% TW-COMM Time Warner
Communications, Inc.
AS7843 590 232 358 60.7% ADELPHIA-AS Adelphia Corp.
AS7018 1380 1024 356 25.8% ATT-INTERNET4 AT&T WorldNet
Services
AS6197 498 157 341 68.5% BATI-ATL BellSouth Network
Solutions, Inc
AS1221 1113 809 304 27.3% ASN-TELSTRA Telstra Pty Ltd
AS1239 973 691 282 29.0% SPRINTLINK Sprint
AS4355 401 120 281 70.1% ERMS-EARTHLNK EARTHLINK, INC
AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE
ARGENTINA
AS705 450 196 254 56.4% ASN-ALTERNET UUNET
Technologies, Inc.
AS4814 263 15 248 94.3% CHINANET-BEIJING-AP China
Telecom (Group)
AS6198 450 203 247 54.9% BATI-MIA BellSouth Network
Solutions, Inc
AS1 662 436 226 34.1% GNTY-1 Genuity
AS22291 243 31 212 87.2% CHARTER-LA Charter
Communications
AS27364 240 29 211 87.9% ACS-INTERNET Armstrong Cable
Services
AS17676 230 26 204 88.7% GIGAINFRA XTAGE CORPORATION
AS2386 483 282 201 41.6% INS-AS AT&T Data
Communications Services
AS4134 304 113 191 62.8% CHINANET-BACKBONE
No.31,Jin-rong Street
AS209 532 342 190 35.7% ASN-QWEST Qwest
AS690 500 310 190 38.0% MERIT-AS-27 Merit Network Inc.
AS6347 370 190 180 48.6% DIAMOND SAVVIS Communications
Corporation
AS2048 259 87 172 66.4% LANET-1 State of Louisiana
AS17557 359 206 153 42.6% PKTELECOM-AS-AP Pakistan
Telecom
AS7303 240 90 150 62.5% AR-TAST-LACNIC Telecom
Argentina Stet-France Telecom
S.A.
AS22773 182 32 150 82.4% CCINET-2 Cox Communications
Inc. Atlanta
AS6140 284 136 148 52.1% IMPSAT-USA ImpSat
AS11492 322 174 148 46.0% CABLEONE CABLE ONE
Total 15870 7943 7927 49.9% Top 30 total
Please see http://www.cidr-report.org for the full report
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