[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 Mar 2003 22:00:02 +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
              28-02-03    119708       85685
              01-03-03    119794       85736
              02-03-03    119902       85774
              03-03-03    119905       85881
              04-03-03    120066       86042
              05-03-03    120121       86071
              06-03-03    120244       86209
              07-03-03    120289       86173
      
      
      AS Summary
               14703  Number of ASes in routing system
                5787  Number of ASes announcing only one prefix
                1586  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').
      
       --- 07Mar03 ---
      ASnum    NetsNow NetsAggr  NetGain   % Gain   Description
      
      Table     120335    86155    34180    28.4%   All ASes
      
      AS3908      1085      567      518    47.7%   SUPERNETASBLK SuperNet, Inc.
      AS18566      507        9      498    98.2%   COVAD Covad Communications
      AS701       1586     1146      440    27.7%   ALTERNET-AS UUNET
                                                     Technologies, Inc.
      AS4151       532      106      426    80.1%   USDA-1 USDA
      AS4323       537      170      367    68.3%   TW-COMM Time Warner
                                                     Communications, Inc.
      AS7843       590      232      358    60.7%   ADELPHIA-AS Adelphia Corp.
      AS7018      1380     1024      356    25.8%   ATT-INTERNET4 AT&T WorldNet
                                                     Services
      AS6197       498      157      341    68.5%   BATI-ATL BellSouth Network
                                                     Solutions, Inc
      AS1221      1113      809      304    27.3%   ASN-TELSTRA Telstra Pty Ltd
      AS1239       973      691      282    29.0%   SPRINTLINK Sprint
      AS4355       401      120      281    70.1%   ERMS-EARTHLNK EARTHLINK, INC
      AS22927      295       14      281    95.3%   AR-TEAR2-LACNIC TELEFONICA DE
                                                     ARGENTINA
      AS705        450      196      254    56.4%   ASN-ALTERNET UUNET
                                                     Technologies, Inc.
      AS4814       263       15      248    94.3%   CHINANET-BEIJING-AP China
                                                     Telecom (Group)
      AS6198       450      203      247    54.9%   BATI-MIA BellSouth Network
                                                     Solutions, Inc
      AS1          662      436      226    34.1%   GNTY-1 Genuity
      AS22291      243       31      212    87.2%   CHARTER-LA Charter
                                                     Communications
      AS27364      240       29      211    87.9%   ACS-INTERNET Armstrong Cable
                                                     Services
      AS17676      230       26      204    88.7%   GIGAINFRA XTAGE CORPORATION
      AS2386       483      282      201    41.6%   INS-AS AT&T Data
                                                     Communications Services
      AS4134       304      113      191    62.8%   CHINANET-BACKBONE
                                                     No.31,Jin-rong Street
      AS209        532      342      190    35.7%   ASN-QWEST Qwest
      AS690        500      310      190    38.0%   MERIT-AS-27 Merit Network Inc.
      AS6347       370      190      180    48.6%   DIAMOND SAVVIS Communications
                                                     Corporation
      AS2048       259       87      172    66.4%   LANET-1 State of Louisiana
      AS17557      359      206      153    42.6%   PKTELECOM-AS-AP Pakistan
                                                     Telecom
      AS7303       240       90      150    62.5%   AR-TAST-LACNIC Telecom
                                                     Argentina Stet-France Telecom
                                                     S.A.
      AS22773      182       32      150    82.4%   CCINET-2 Cox Communications
                                                     Inc. Atlanta
      AS6140       284      136      148    52.1%   IMPSAT-USA ImpSat
      AS11492      322      174      148    46.0%   CABLEONE CABLE ONE
      
      Total      15870     7943     7927    49.9%   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