The Cidr Report

This report has been generated at Fri Dec 6 21:44:40 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
        29-11-02 117628 84925
        30-11-02 117500 84864
        01-12-02 117450 84897
        02-12-02 117617 84818
        03-12-02 117623 84175
        04-12-02 116419 84197
        05-12-02 116693 84459
        06-12-02 116870 84561

AS Summary
         14128 Number of ASes in routing system
          5562 Number of ASes announcing only one prefix
          1716 Largest number of prefixes announced by an AS
                AS3908 : SUPERNETASBLK SuperNet, Inc.
      72949248 Largest address span announced by an AS (/32s)
                AS568 : SUMNET-AS DISO-UNRRA

Possible Bogus AS

        AS63000 Announced by: AS14522 EC-SASA-LACNIC SatNet S.A.

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').

--- 06Dec02 ---
ASnum NetsNow NetsAggr NetGain % Gain Description

Table 116820 84482 32338 27.7% All ASes

AS3908 1716 975 741 43.2% SUPERNETASBLK SuperNet, Inc.
AS701 1712 1227 485 28.3% ALTERNET-AS UUNET
                                               Technologies, Inc.
AS18566 395 5 390 98.7% COVAD Covad Communications
AS7018 1389 1034 355 25.6% ATT-INTERNET4 AT&T WorldNet
                                               Services
AS4323 522 185 337 64.6% TW-COMM Time Warner
                                               Communications, Inc.
AS7843 644 307 337 52.3% ADELPHIA-AS Adelphia Corp.
AS6197 458 124 334 72.9% BATI-ATL BellSouth Network
                                               Solutions, Inc
AS1221 1162 843 319 27.5% ASN-TELSTRA Telstra Pty Ltd
AS4355 404 136 268 66.3% ERMS-EARTHLNK EARTHLINK, INC
AS6347 351 83 268 76.4% DIAMOND SAVVIS Communications
                                               Corporation
AS22927 289 22 267 92.4% AR-TEAR2-LACNIC TELEFONICA DE
                                               ARGENTINA
AS1239 924 663 261 28.2% SPRINTLINK Sprint
AS7046 584 323 261 44.7% UUNET-CUSTOMER UUNET
                                               Technologies, Inc.
AS705 434 195 239 55.1% ASN-ALTERNET UUNET
                                               Technologies, Inc.
AS4814 248 15 233 94.0% CHINANET-BEIJING-AP China
                                               Telecom (Group)
AS1 663 439 224 33.8% GNTY-1 Genuity
AS6198 417 198 219 52.5% BATI-MIA BellSouth Network
                                               Solutions, Inc
AS4151 351 135 216 61.5% USDA-1 USDA
AS17676 232 28 204 87.9% GIGAINFRA XTAGE CORPORATION
AS852 653 464 189 28.9% ASN852 Telus Advanced
                                               Communications
AS690 508 321 187 36.8% MERIT-AS-27 Merit Network Inc.
AS4134 299 115 184 61.5% ERX-CHINALINK Data
                                               Communications Bureau
AS6595 243 59 184 75.7% DODDSEUR DoD Education
                                               Activity Network Assistance
                                               Center
AS209 520 338 182 35.0% ASN-QWEST Qwest
AS2048 262 88 174 66.4% LANET-1 State of Louisiana
AS6140 279 127 152 54.5% IMPSAT-USA ImpSat
AS6327 183 34 149 81.4% SHAWFIBER Shaw Fiberlink
                                               Limited
AS2386 374 229 145 38.8% INS-AS AT&T Data
                                               Communications Services
AS17557 314 172 142 45.2% PKTELECOM-AS-AP Pakistan
                                               Telecom
AS3215 309 169 140 45.3% AS3215 France Telecom
                                               Transpac

Total 16839 9053 7786 46.2% Top 30 total

Please see http://www.cidr-report.org for the full report