[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, 17 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
              10-01-03    118118       85265
              11-01-03    118137       85264
              12-01-03    118098       85311
              13-01-03    118022       85338
              14-01-03    118150       85261
              15-01-03    118309       85199
              16-01-03    118188       85195
              17-01-03    118250       85247
      
      
      AS Summary
               14387  Number of ASes in routing system
                5650  Number of ASes announcing only one prefix
                1586  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').
      
       --- 17Jan03 ---
      ASnum    NetsNow NetsAggr  NetGain   % Gain   Description
      
      Table     118475    85309    33166    28.0%   All ASes
      
      AS3908      1187      693      494    41.6%   SUPERNETASBLK SuperNet, Inc.
      AS18566      430        5      425    98.8%   COVAD Covad Communications
      AS701       1586     1176      410    25.9%   ALTERNET-AS UUNET
                                                     Technologies, Inc.
      AS7018      1442     1043      399    27.7%   ATT-INTERNET4 AT&T WorldNet
                                                     Services
      AS4323       532      189      343    64.5%   TW-COMM Time Warner
                                                     Communications, Inc.
      AS7843       609      267      342    56.2%   ADELPHIA-AS Adelphia Corp.
      AS6197       464      151      313    67.5%   BATI-ATL BellSouth Network
                                                     Solutions, Inc
      AS1221      1137      839      298    26.2%   ASN-TELSTRA Telstra Pty Ltd
      AS1239       963      679      284    29.5%   SPRINTLINK Sprint
      AS6347       366       85      281    76.8%   DIAMOND SAVVIS Communications
                                                     Corporation
      AS4355       408      133      275    67.4%   ERMS-EARTHLNK EARTHLINK, INC
      AS4151       329       58      271    82.4%   USDA-1 USDA
      AS7046       550      282      268    48.7%   UUNET-CUSTOMER UUNET
                                                     Technologies, Inc.
      AS22927      283       22      261    92.2%   AR-TEAR2-LACNIC TELEFONICA DE
                                                     ARGENTINA
      AS705        426      186      240    56.3%   ASN-ALTERNET UUNET
                                                     Technologies, Inc.
      AS4814       251       15      236    94.0%   CHINANET-BEIJING-AP China
                                                     Telecom (Group)
      AS6198       426      202      224    52.6%   BATI-MIA BellSouth Network
                                                     Solutions, Inc
      AS1          654      433      221    33.8%   GNTY-1 Genuity
      AS17676      225       26      199    88.4%   GIGAINFRA XTAGE CORPORATION
      AS22291      227       29      198    87.2%   CHARTER-LA Charter
                                                     Communications
      AS690        521      326      195    37.4%   MERIT-AS-27 Merit Network Inc.
      AS6140       319      126      193    60.5%   IMPSAT-USA ImpSat
      AS209        517      329      188    36.4%   ASN-QWEST Qwest
      AS4134       296      112      184    62.2%   ERX-CHINALINK Data
                                                     Communications Bureau
      AS2048       260       86      174    66.9%   LANET-1 State of Louisiana
      AS2386       410      243      167    40.7%   INS-AS AT&T Data
                                                     Communications Services
      AS852        608      446      162    26.6%   ASN852 Telus Advanced
                                                     Communications
      AS6327       185       34      151    81.6%   SHAWFIBER Shaw Fiberlink
                                                     Limited
      AS11492      297      155      142    47.8%   CABLEONE CABLE ONE
      AS3215       314      174      140    44.6%   AS3215  France Telecom
                                                     Transpac
      
      Total      16222     8544     7678    47.3%   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 lists dot apnic dot net
        routing-wg at ripe dot net
        afnog at afnog dot org