[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, 10 Jan 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
              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
      
      ------------------------------------
      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