[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 Feb 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
              21-02-03    119400       85542
              22-02-03    119615       85397
              23-02-03    119379       85455
              24-02-03    119479       85425
              25-02-03    119470       85630
              26-02-03    119690       85676
              27-02-03    119740       85694
              28-02-03    119708       85768
      
      
      AS Summary
               14678  Number of ASes in routing system
                5782  Number of ASes announcing only one prefix
                1604  Largest number of prefixes announced by an AS
                      AS701  : ALTERNET-AS UUNET Technologies, Inc.
            73080832  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').
      
       --- 28Feb03 ---
      ASnum    NetsNow NetsAggr  NetGain   % Gain   Description
      
      Table     119861    85734    34127    28.5%   All ASes
      
      AS3908      1084      568      516    47.6%   SUPERNETASBLK SuperNet, Inc.
      AS18566      491        8      483    98.4%   COVAD Covad Communications
      AS701       1604     1151      453    28.2%   ALTERNET-AS UUNET
                                                     Technologies, Inc.
      AS4151       532      105      427    80.3%   USDA-1 USDA
      AS4323       533      169      364    68.3%   TW-COMM Time Warner
                                                     Communications, Inc.
      AS7018      1385     1025      360    26.0%   ATT-INTERNET4 AT&T WorldNet
                                                     Services
      AS7843       556      224      332    59.7%   ADELPHIA-AS Adelphia Corp.
      AS6197       485      157      328    67.6%   BATI-ATL BellSouth Network
                                                     Solutions, Inc
      AS7046       559      244      315    56.4%   UUNET-CUSTOMER UUNET
                                                     Technologies, Inc.
      AS1221      1121      816      305    27.2%   ASN-TELSTRA Telstra Pty Ltd
      AS1239       969      686      283    29.2%   SPRINTLINK Sprint
      AS4355       402      119      283    70.4%   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       264       15      249    94.3%   CHINANET-BEIJING-AP China
                                                     Telecom (Group)
      AS6198       439      205      234    53.3%   BATI-MIA BellSouth Network
                                                     Solutions, Inc
      AS1          662      435      227    34.3%   GNTY-1 Genuity
      AS22291      243       31      212    87.2%   CHARTER-LA Charter
                                                     Communications
      AS17676      230       26      204    88.7%   GIGAINFRA XTAGE CORPORATION
      AS6347       369      168      201    54.5%   DIAMOND SAVVIS Communications
                                                     Corporation
      AS2386       478      283      195    40.8%   INS-AS AT&T Data
                                                     Communications Services
      AS209        528      337      191    36.2%   ASN-QWEST Qwest
      AS4134       304      113      191    62.8%   CHINANET-BACKBONE
                                                     No.31,Jin-rong Street
      AS690        498      308      190    38.2%   MERIT-AS-27 Merit Network Inc.
      AS2048       258       87      171    66.3%   LANET-1 State of Louisiana
      AS852        599      444      155    25.9%   ASN852 Telus Advanced
                                                     Communications
      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       285      136      149    52.3%   IMPSAT-USA ImpSat
      AS6327       187       41      146    78.1%   SHAWFIBER Shaw Fiberlink
                                                     Limited
      
      Total      16232     8233     7999    49.3%   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