[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, 14 Mar 2003 22:00:00 +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
              07-03-03    120289       86148
              08-03-03    120272       86188
              09-03-03    120197       86257
              10-03-03    120223       86324
              11-03-03    120475       86388
              12-03-03    120508       86345
              13-03-03    120478       86334
              14-03-03    120659       86376
      
      
      AS Summary
               14740  Number of ASes in routing system
                5812  Number of ASes announcing only one prefix
                1562  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').
      
       --- 14Mar03 ---
      ASnum    NetsNow NetsAggr  NetGain   % Gain   Description
      
      Table     120741    86391    34350    28.4%   All ASes
      
      AS3908      1097      537      560    51.0%   SUPERNETASBLK SuperNet, Inc.
      AS18566      518       25      493    95.2%   COVAD Covad Communications
      AS701       1562     1129      433    27.7%   ALTERNET-AS UUNET
                                                     Technologies, Inc.
      AS4151       535      109      426    79.6%   USDA-1 USDA
      AS7843       600      217      383    63.8%   ADELPHIA-AS Adelphia Corp.
      AS4323       555      173      382    68.8%   TW-COMM Time Warner
                                                     Communications, Inc.
      AS7018      1372     1021      351    25.6%   ATT-INTERNET4 AT&T WorldNet
                                                     Services
      AS6197       499      160      339    67.9%   BATI-ATL BellSouth Network
                                                     Solutions, Inc
      AS1221      1101      805      296    26.9%   ASN-TELSTRA Telstra Pty Ltd
      AS1239       974      690      284    29.2%   SPRINTLINK Sprint
      AS22927      295       14      281    95.3%   AR-TEAR2-LACNIC TELEFONICA DE
                                                     ARGENTINA
      AS4355       391      119      272    69.6%   ERMS-EARTHLNK EARTHLINK, INC
      AS705        449      195      254    56.6%   ASN-ALTERNET UUNET
                                                     Technologies, Inc.
      AS6198       451      200      251    55.7%   BATI-MIA BellSouth Network
                                                     Solutions, Inc
      AS4814       264       15      249    94.3%   CHINANET-BEIJING-AP China
                                                     Telecom (Group)
      AS1          656      431      225    34.3%   GNTY-1 Genuity
      AS17676      230       27      203    88.3%   GIGAINFRA XTAGE CORPORATION
      AS2386       480      280      200    41.7%   INS-AS AT&T Data
                                                     Communications Services
      AS6347       370      171      199    53.8%   DIAMOND SAVVIS Communications
                                                     Corporation
      AS22291      242       45      197    81.4%   CHARTER-LA Charter
                                                     Communications
      AS4134       309      115      194    62.8%   CHINANET-BACKBONE
                                                     No.31,Jin-rong Street
      AS690        503      313      190    37.8%   MERIT-AS-27 Merit Network Inc.
      AS209        530      341      189    35.7%   ASN-QWEST Qwest
      AS27364      258       84      174    67.4%   ACS-INTERNET Armstrong Cable
                                                     Services
      AS2048       258       87      171    66.3%   LANET-1 State of Louisiana
      AS17557      370      212      158    42.7%   PKTELECOM-AS-AP Pakistan
                                                     Telecom
      AS6140       292      140      152    52.1%   IMPSAT-USA ImpSat
      AS22773      184       33      151    82.1%   CCINET-2 Cox Communications
                                                     Inc. Atlanta
      AS6327       187       40      147    78.6%   SHAWFIBER Shaw Fiberlink
                                                     Limited
      AS7303       242       98      144    59.5%   AR-TAST-LACNIC Telecom
                                                     Argentina Stet-France Telecom
                                                     S.A.
      
      Total      15774     7826     7948    50.4%   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