[apops] The Cidr Report

  • To: cidr-report at potaroo dot net
  • Subject: [apops] The Cidr Report
  • From: cidr-report at potaroo dot net
  • Date: Fri, 7 Feb 2003 22:00:01 +1100 (EST)
  • Cc: nanog at merit dot edu, eof-list at ripe dot net, apops at lists dot apnic dot net, routing-wg at ripe dot net, afnog at afnog dot org
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    • 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
              31-01-03    118463       85095
              01-02-03    118556       85054
              02-02-03    118567       85128
              03-02-03    118587       85148
              04-02-03    118588       85028
              05-02-03    118502       85128
              06-02-03    118561       85108
              07-02-03    118526       85124
      
      
      AS Summary
               14519  Number of ASes in routing system
                5722  Number of ASes announcing only one prefix
                1584  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').
      
       --- 07Feb03 ---
      ASnum    NetsNow NetsAggr  NetGain   % Gain   Description
      
      Table     118612    85169    33443    28.2%   All ASes
      
      AS3908      1058      579      479    45.3%   SUPERNETASBLK SuperNet, Inc.
      AS18566      457        7      450    98.5%   COVAD Covad Communications
      AS701       1584     1171      413    26.1%   ALTERNET-AS UUNET
                                                     Technologies, Inc.
      AS7018      1433     1041      392    27.4%   ATT-INTERNET4 AT&T WorldNet
                                                     Services
      AS4323       528      170      358    67.8%   TW-COMM Time Warner
                                                     Communications, Inc.
      AS6197       472      154      318    67.4%   BATI-ATL BellSouth Network
                                                     Solutions, Inc
      AS7843       568      253      315    55.5%   ADELPHIA-AS Adelphia Corp.
      AS1221      1133      829      304    26.8%   ASN-TELSTRA Telstra Pty Ltd
      AS1239       964      678      286    29.7%   SPRINTLINK Sprint
      AS7046       563      280      283    50.3%   UUNET-CUSTOMER UUNET
                                                     Technologies, Inc.
      AS6347       367       85      282    76.8%   DIAMOND SAVVIS Communications
                                                     Corporation
      AS22927      295       14      281    95.3%   AR-TEAR2-LACNIC TELEFONICA DE
                                                     ARGENTINA
      AS4355       396      120      276    69.7%   ERMS-EARTHLNK EARTHLINK, INC
      AS4151       345       71      274    79.4%   USDA-1 USDA
      AS705        437      189      248    56.8%   ASN-ALTERNET UUNET
                                                     Technologies, Inc.
      AS4814       261       15      246    94.3%   CHINANET-BEIJING-AP China
                                                     Telecom (Group)
      AS852        680      444      236    34.7%   ASN852 Telus Advanced
                                                     Communications
      AS6198       432      201      231    53.5%   BATI-MIA BellSouth Network
                                                     Solutions, Inc
      AS1          665      435      230    34.6%   GNTY-1 Genuity
      AS22291      238       31      207    87.0%   CHARTER-LA Charter
                                                     Communications
      AS17676      222       26      196    88.3%   GIGAINFRA XTAGE CORPORATION
      AS209        532      341      191    35.9%   ASN-QWEST Qwest
      AS690        498      308      190    38.2%   MERIT-AS-27 Merit Network Inc.
      AS4134       301      117      184    61.1%   ERX-CHINALINK Data
                                                     Communications Bureau
      AS2386       437      263      174    39.8%   INS-AS AT&T Data
                                                     Communications Services
      AS2048       259       87      172    66.4%   LANET-1 State of Louisiana
      AS17557      336      186      150    44.6%   PKTELECOM-AS-AP Pakistan
                                                     Telecom
      AS6140       284      135      149    52.5%   IMPSAT-USA ImpSat
      AS6327       186       40      146    78.5%   SHAWFIBER Shaw Fiberlink
                                                     Limited
      AS11492      307      164      143    46.6%   CABLEONE CABLE ONE
      
      Total      16238     8434     7804    48.1%   Top 30 total
      
      
      
      Please see http://www.cidr-report.org for the full report
      
      ------------------------------------
      Copies of this report are mailed to:
        nanog at merit dot edu
        eof-list at ripe dot net
        apops at lists dot apnic dot net
        routing-wg at ripe dot net
        afnog at afnog dot org