[apops] The Cidr Report

This report has been generated at Fri Jan 10 21:49:53 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
        03-01-03 117672 85180
        04-01-03 117848 85149
        05-01-03 117767 85091
        06-01-03 117793 85127
        07-01-03 117802 85131
        08-01-03 117947 85108
        09-01-03 118044 85215
        10-01-03 118118 85385

AS Summary
         14310 Number of ASes in routing system
          5626 Number of ASes announcing only one prefix
          1606 Largest number of prefixes announced by an AS
                AS701 : ALTERNET-AS UUNET Technologies, Inc.
      73048064 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').

--- 10Jan03 ---
ASnum NetsNow NetsAggr NetGain % Gain Description

Table 118165 85303 32862 27.8% All ASes

AS3908 1175 684 491 41.8% SUPERNETASBLK SuperNet, Inc.
AS18566 422 5 417 98.8% COVAD Covad Communications
AS7018 1450 1035 415 28.6% ATT-INTERNET4 AT&T WorldNet
                                               Services
AS701 1606 1193 413 25.7% ALTERNET-AS UUNET
                                               Technologies, Inc.
AS4323 526 188 338 64.3% TW-COMM Time Warner
                                               Communications, Inc.
AS7843 628 291 337 53.7% ADELPHIA-AS Adelphia Corp.
AS6197 458 150 308 67.2% BATI-ATL BellSouth Network
                                               Solutions, Inc
AS1221 1145 844 301 26.3% ASN-TELSTRA Telstra Pty Ltd
AS1239 968 679 289 29.9% SPRINTLINK Sprint
AS6347 369 85 284 77.0% DIAMOND SAVVIS Communications
                                               Corporation
AS4355 406 135 271 66.7% ERMS-EARTHLNK EARTHLINK, INC
AS7046 554 286 268 48.4% UUNET-CUSTOMER UUNET
                                               Technologies, Inc.
AS22927 289 22 267 92.4% 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)
AS1 661 439 222 33.6% GNTY-1 Genuity
AS6198 422 200 222 52.6% BATI-MIA BellSouth Network
                                               Solutions, Inc
AS17676 229 24 205 89.5% GIGAINFRA XTAGE CORPORATION
AS22291 227 29 198 87.2% CHARTER-LA Charter
                                               Communications
AS690 513 319 194 37.8% MERIT-AS-27 Merit Network Inc.
AS4151 328 136 192 58.5% USDA-1 USDA
AS209 518 330 188 36.3% ASN-QWEST Qwest
AS6140 314 126 188 59.9% IMPSAT-USA ImpSat
AS4134 290 107 183 63.1% ERX-CHINALINK Data
                                               Communications Bureau
AS852 627 445 182 29.0% ASN852 Telus Advanced
                                               Communications
AS2048 260 87 173 66.5% LANET-1 State of Louisiana
AS2386 381 222 159 41.7% INS-AS AT&T Data
                                               Communications Services
AS6327 185 34 151 81.6% SHAWFIBER Shaw Fiberlink
                                               Limited
AS17557 323 179 144 44.6% PKTELECOM-AS-AP Pakistan
                                               Telecom
AS3215 315 175 140 44.4% AS3215 France Telecom
                                               Transpac

Total 16266 8650 7616 46.8% Top 30 total

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