[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, 28 Mar 2003 22:00:01 +1100 (EST)
  • Cc: nanog at merit dot edu, eof-list at ripe dot net, apops at apops 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
              21-03-03    120815       86434
              22-03-03    120741       86424
              23-03-03    120589       86556
              24-03-03    120679       86593
              25-03-03    120712       86324
              26-03-03    120739       86276
              27-03-03    120877       86281
              28-03-03    120855       86349
      
      
      AS Summary
               14836  Number of ASes in routing system
                5851  Number of ASes announcing only one prefix
                1555  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').
      
       --- 28Mar03 ---
      ASnum    NetsNow NetsAggr  NetGain   % Gain   Description
      
      Table     121000    86362    34638    28.6%   All ASes
      
      AS3908      1048      537      511    48.8%   SUPERNETASBLK SuperNet, Inc.
      AS18566      509       14      495    97.2%   COVAD Covad Communications
      AS4151       585      107      478    81.7%   USDA-1 USDA
      AS701       1555     1115      440    28.3%   ALTERNET-AS UUNET
                                                     Technologies, Inc.
      AS7843       599      198      401    66.9%   ADELPHIA-AS Adelphia Corp.
      AS7018      1346      952      394    29.3%   ATT-INTERNET4 AT&T WorldNet
                                                     Services
      AS4323       561      176      385    68.6%   TW-COMM Time Warner
                                                     Communications, Inc.
      AS1221      1109      813      296    26.7%   ASN-TELSTRA Telstra Pty Ltd
      AS1239       968      688      280    28.9%   SPRINTLINK Sprint
      AS6197       476      202      274    57.6%   BATI-ATL BellSouth Network
                                                     Solutions, Inc
      AS22927      286       14      272    95.1%   AR-TEAR2-LACNIC TELEFONICA DE
                                                     ARGENTINA
      AS6198       450      182      268    59.6%   BATI-MIA BellSouth Network
                                                     Solutions, Inc
      AS705        534      268      266    49.8%   ASN-ALTERNET UUNET
                                                     Technologies, Inc.
      AS4355       382      116      266    69.6%   ERMS-EARTHLNK EARTHLINK, INC
      AS1          685      429      256    37.4%   GNTY-1 Genuity
      AS4814       267       15      252    94.4%   CHINANET-BEIJING-AP China
                                                     Telecom (Group)
      AS2386       499      249      250    50.1%   INS-AS AT&T Data
                                                     Communications Services
      AS17676      235       28      207    88.1%   GIGAINFRA XTAGE CORPORATION
      AS22291      239       39      200    83.7%   CHARTER-LA Charter
                                                     Communications
      AS27364      265       65      200    75.5%   ACS-INTERNET Armstrong Cable
                                                     Services
      AS7132       674      475      199    29.5%   SBIS-AS SBC Internet Services
                                                     - Southwest
      AS4134       316      123      193    61.1%   CHINANET-BACKBONE
                                                     No.31,Jin-rong Street
      AS22773      197        8      189    95.9%   CCINET-2 Cox Communications
                                                     Inc. Atlanta
      AS209        526      339      187    35.6%   ASN-QWEST Qwest
      AS690        503      316      187    37.2%   MERIT-AS-27 Merit Network Inc.
      AS6347       373      193      180    48.3%   DIAMOND SAVVIS Communications
                                                     Corporation
      AS3561       520      344      176    33.8%   CWUSA Cable & Wireless USA
      AS2048       259       87      172    66.4%   LANET-1 State of Louisiana
      AS17557      375      214      161    42.9%   PKTELECOM-AS-AP Pakistan
                                                     Telecom
      AS6140       290      140      150    51.7%   IMPSAT-USA ImpSat
      
      Total      16631     8446     8185    49.2%   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 apops dot net
        routing-wg at ripe dot net
        afnog at afnog dot org