[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, 27 Dec 2002 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
              20-12-02    116819       84591
              21-12-02    117027       84645
              22-12-02    116950       84680
              23-12-02    117004       84625
              24-12-02    117042       84622
              25-12-02    117164       84618
              26-12-02    117170       84663
              27-12-02    117120       84778
      
      
      AS Summary
               14244  Number of ASes in routing system
                5613  Number of ASes announcing only one prefix
                1625  Largest number of prefixes announced by an AS
                      AS701  : ALTERNET-AS UUNET Technologies, Inc.
            72982528  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').
      
       --- 27Dec02 ---
      ASnum    NetsNow NetsAggr  NetGain   % Gain   Description
      
      Table     117163    84785    32378    27.6%   All ASes
      
      AS3908      1173      684      489    41.7%   SUPERNETASBLK SuperNet, Inc.
      AS701       1625     1208      417    25.7%   ALTERNET-AS UUNET
                                                     Technologies, Inc.
      AS18566      414        5      409    98.8%   COVAD Covad Communications
      AS7018      1425     1030      395    27.7%   ATT-INTERNET4 AT&T WorldNet
                                                     Services
      AS4323       531      188      343    64.6%   TW-COMM Time Warner
                                                     Communications, Inc.
      AS7843       629      289      340    54.1%   ADELPHIA-AS Adelphia Corp.
      AS1221      1147      831      316    27.6%   ASN-TELSTRA Telstra Pty Ltd
      AS6197       454      150      304    67.0%   BATI-ATL BellSouth Network
                                                     Solutions, Inc
      AS6347       360       85      275    76.4%   DIAMOND SAVVIS Communications
                                                     Corporation
      AS4355       407      135      272    66.8%   ERMS-EARTHLNK EARTHLINK, INC
      AS7046       581      311      270    46.5%   UUNET-CUSTOMER UUNET
                                                     Technologies, Inc.
      AS22927      289       22      267    92.4%   AR-TEAR2-LACNIC TELEFONICA DE
                                                     ARGENTINA
      AS1239       947      682      265    28.0%   SPRINTLINK Sprint
      AS705        422      188      234    55.5%   ASN-ALTERNET UUNET
                                                     Technologies, Inc.
      AS4814       249       15      234    94.0%   CHINANET-BEIJING-AP China
                                                     Telecom (Group)
      AS1          662      440      222    33.5%   GNTY-1 Genuity
      AS6198       422      200      222    52.6%   BATI-MIA BellSouth Network
                                                     Solutions, Inc
      AS17676      231       26      205    88.7%   GIGAINFRA XTAGE CORPORATION
      AS22291      226       29      197    87.2%   CHARTER-LA Charter
                                                     Communications
      AS690        513      319      194    37.8%   MERIT-AS-27 Merit Network Inc.
      AS6140       315      125      190    60.3%   IMPSAT-USA ImpSat
      AS4151       324      135      189    58.3%   USDA-1 USDA
      AS4134       289      108      181    62.6%   ERX-CHINALINK Data
                                                     Communications Bureau
      AS209        517      337      180    34.8%   ASN-QWEST Qwest
      AS852        619      445      174    28.1%   ASN852 Telus Advanced
                                                     Communications
      AS2048       255       84      171    67.1%   LANET-1 State of Louisiana
      AS6327       184       33      151    82.1%   SHAWFIBER Shaw Fiberlink
                                                     Limited
      AS17557      323      179      144    44.6%   PKTELECOM-AS-AP Pakistan
                                                     Telecom
      AS2386       370      228      142    38.4%   INS-AS AT&T Data
                                                     Communications Services
      AS3215       313      174      139    44.4%   AS3215  France Telecom
                                                     Transpac
      
      Total      16216     8685     7531    46.4%   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 lists dot apnic dot net
        routing-wg at ripe dot net
        afnog at afnog dot org