[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, 24 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
              17-01-03    118250       85350
              18-01-03    118505       84955
              19-01-03    117957       85033
              20-01-03    118153       85036
              21-01-03    118131       85084
              22-01-03    118226       85008
              23-01-03    118178       85134
              24-01-03    118201       85092
      
      
      AS Summary
               14428  Number of ASes in routing system
                5654  Number of ASes announcing only one prefix
                1592  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').
      
       --- 24Jan03 ---
      ASnum    NetsNow NetsAggr  NetGain   % Gain   Description
      
      Table     118323    85145    33178    28.0%   All ASes
      
      AS3908      1185      694      491    41.4%   SUPERNETASBLK SuperNet, Inc.
      AS18566      443        5      438    98.9%   COVAD Covad Communications
      AS701       1592     1180      412    25.9%   ALTERNET-AS UUNET
                                                     Technologies, Inc.
      AS7018      1437     1036      401    27.9%   ATT-INTERNET4 AT&T WorldNet
                                                     Services
      AS7843       592      250      342    57.8%   ADELPHIA-AS Adelphia Corp.
      AS4323       527      187      340    64.5%   TW-COMM Time Warner
                                                     Communications, Inc.
      AS6197       468      152      316    67.5%   BATI-ATL BellSouth Network
                                                     Solutions, Inc
      AS1221      1137      839      298    26.2%   ASN-TELSTRA Telstra Pty Ltd
      AS6347       372       85      287    77.2%   DIAMOND SAVVIS Communications
                                                     Corporation
      AS1239       962      679      283    29.4%   SPRINTLINK Sprint
      AS4355       408      133      275    67.4%   ERMS-EARTHLNK EARTHLINK, INC
      AS7046       556      282      274    49.3%   UUNET-CUSTOMER UUNET
                                                     Technologies, Inc.
      AS4151       329       58      271    82.4%   USDA-1 USDA
      AS22927      289       22      267    92.4%   AR-TEAR2-LACNIC TELEFONICA DE
                                                     ARGENTINA
      AS4814       261       15      246    94.3%   CHINANET-BEIJING-AP China
                                                     Telecom (Group)
      AS705        429      186      243    56.6%   ASN-ALTERNET UUNET
                                                     Technologies, Inc.
      AS852        678      445      233    34.4%   ASN852 Telus Advanced
                                                     Communications
      AS1          656      434      222    33.8%   GNTY-1 Genuity
      AS6198       423      202      221    52.2%   BATI-MIA BellSouth Network
                                                     Solutions, Inc
      AS17676      227       28      199    87.7%   GIGAINFRA XTAGE CORPORATION
      AS22291      228       29      199    87.3%   CHARTER-LA Charter
                                                     Communications
      AS690        521      326      195    37.4%   MERIT-AS-27 Merit Network Inc.
      AS6140       317      125      192    60.6%   IMPSAT-USA ImpSat
      AS209        520      332      188    36.2%   ASN-QWEST Qwest
      AS4134       298      114      184    61.7%   ERX-CHINALINK Data
                                                     Communications Bureau
      AS2386       425      252      173    40.7%   INS-AS AT&T Data
                                                     Communications Services
      AS2048       260       89      171    65.8%   LANET-1 State of Louisiana
      AS6327       186       35      151    81.2%   SHAWFIBER Shaw Fiberlink
                                                     Limited
      AS17557      329      182      147    44.7%   PKTELECOM-AS-AP Pakistan
                                                     Telecom
      AS11492      299      157      142    47.5%   CABLEONE CABLE ONE
      
      Total      16354     8553     7801    47.7%   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