[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, 31 Jan 2003 22:00:00 +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
              24-01-03    118201       85103
              25-01-03    118189       83778
              26-01-03    116341       84709
              27-01-03    117892       84848
              28-01-03    118004       85138
              29-01-03    118290       85119
              30-01-03    118378       85040
              31-01-03    118463       85056
      
      
      AS Summary
               14479  Number of ASes in routing system
                5680  Number of ASes announcing only one prefix
                1585  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').
      
       --- 31Jan03 ---
      ASnum    NetsNow NetsAggr  NetGain   % Gain   Description
      
      Table     118597    85097    33500    28.2%   All ASes
      
      AS3908      1179      682      497    42.2%   SUPERNETASBLK SuperNet, Inc.
      AS18566      450        7      443    98.4%   COVAD Covad Communications
      AS701       1585     1174      411    25.9%   ALTERNET-AS UUNET
                                                     Technologies, Inc.
      AS7018      1427     1035      392    27.5%   ATT-INTERNET4 AT&T WorldNet
                                                     Services
      AS4323       527      170      357    67.7%   TW-COMM Time Warner
                                                     Communications, Inc.
      AS7843       584      257      327    56.0%   ADELPHIA-AS Adelphia Corp.
      AS6197       471      154      317    67.3%   BATI-ATL BellSouth Network
                                                     Solutions, Inc
      AS1221      1136      830      306    26.9%   ASN-TELSTRA Telstra Pty Ltd
      AS6347       376       85      291    77.4%   DIAMOND SAVVIS Communications
                                                     Corporation
      AS4355       410      126      284    69.3%   ERMS-EARTHLNK EARTHLINK, INC
      AS1239       958      675      283    29.5%   SPRINTLINK Sprint
      AS22927      295       14      281    95.3%   AR-TEAR2-LACNIC TELEFONICA DE
                                                     ARGENTINA
      AS7046       551      277      274    49.7%   UUNET-CUSTOMER UUNET
                                                     Technologies, Inc.
      AS4151       329       58      271    82.4%   USDA-1 USDA
      AS4814       261       15      246    94.3%   CHINANET-BEIJING-AP China
                                                     Telecom (Group)
      AS705        435      190      245    56.3%   ASN-ALTERNET UUNET
                                                     Technologies, Inc.
      AS852        680      445      235    34.6%   ASN852 Telus Advanced
                                                     Communications
      AS1          663      435      228    34.4%   GNTY-1 Genuity
      AS6198       424      202      222    52.4%   BATI-MIA BellSouth Network
                                                     Solutions, Inc
      AS22291      237       30      207    87.3%   CHARTER-LA Charter
                                                     Communications
      AS17676      220       24      196    89.1%   GIGAINFRA XTAGE CORPORATION
      AS690        505      311      194    38.4%   MERIT-AS-27 Merit Network Inc.
      AS209        521      333      188    36.1%   ASN-QWEST Qwest
      AS4134       301      117      184    61.1%   ERX-CHINALINK Data
                                                     Communications Bureau
      AS2386       435      258      177    40.7%   INS-AS AT&T Data
                                                     Communications Services
      AS6140       306      132      174    56.9%   IMPSAT-USA ImpSat
      AS2048       259       87      172    66.4%   LANET-1 State of Louisiana
      AS6327       187       36      151    80.7%   SHAWFIBER Shaw Fiberlink
                                                     Limited
      AS17557      330      183      147    44.5%   PKTELECOM-AS-AP Pakistan
                                                     Telecom
      AS11492      300      157      143    47.7%   CABLEONE CABLE ONE
      
      Total      16342     8499     7843    48.0%   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