[apops] The Cidr Report

  • To: nanog at merit dot edu
  • Subject: [apops] The Cidr Report
  • From: CIDR Report <cidr-report at cisco dot com>
  • Date: Fri, 31 May 2002 23:00:02 -0700
  • Cc: tbates at cisco dot com, eof-list at ripe dot net, apops at lists dot apnic dot net, routing-wg at ripe dot net, afnog at afnog dot org
  • Sender: owner-apops@lists.apnic.net
    • 
      This is an auto-generated mail on Fri May 31 23:00:01 PDT 2002
      It is not checked before it leaves my workstation.  However, hopefully 
      you will find this report interesting and will take the time to look 
      through this to see if you can improve the amount of aggregation you 
      perform.
      
      Check http://www.employees.org/~tbates/cidr-report.html for a daily
      update of this report.
      
      NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for
      the regional version of this report.
      
      NEW: Check http://www.employees.org/~tbates/autnums.html for a complete
      list of autonomous system number to name mappings as used by the CIDR-Report.
      
      The report is split into sections:
      
         0) General Status
         
            List the route table history for the last week, list any possibly
            bogus routes seen and give some status on ASes.
      
         1) Gains by aggregating at the origin AS level
      
            This lists the "Top 30" players who if they decided to aggregate
            their announced classful prefixes at the origin AS level could 
            make a significant difference in the reduction of the current 
            size of the Internet routing table. This calculation does not 
            take into account the inclusion of holes when forming an aggregate
            so it is possible even larger reduction should be possible.
      
         2) Weekly Delta
      
            A summary of the last weeks changes in terms of withdrawn and
            added routes. Please note that this is only a snapshot but does 
            give some indication of ASes participating in CIDR. Clearly,
            it is generally a good thing to see a large amount of withdrawls.
      
         3) Interesting aggregates
      
            Interesting here means not an aggregate made as a set of 
            classful routes.      
      
      Thanks to GX Networks for giving me access to their routing tables once a
      day. 
      
      Please send any comments about this report directly to CIDR Report <cidr-report at cisco dot com>.
      
      
      
      ------------------------------------------------------------------------------
      
                              CIDR REPORT for 31May02
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      240502	110020
      250502	110319
      260502	109931
      270502	110178
      280502	110335
      290502	110367
      300502	110842
      310502	110978
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 220.36.0.0/16 from AS17676
      *** Bogus 220.40.0.0/16 from AS17676
      *** Bogus 220.47.0.0/16 from AS17676
      
      AS Summary
      ----------
      
      Number of ASes in routing system:              13044
      
      Number of ASes announcing only one prefix:      7934 (4445 cidr, 3489 classful)
      
      Largest number of  cidr routes:                  635 announced by  AS701
      Largest number of classful routes:              1357 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 31May02 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS701       1357     1087      270   19.9%   UUNET Technologies, Inc. 
      AS1221      1109      860      249   22.5%   UNREGISTERED
      AS17557      285      109      176   61.8%   Pakistan Telecom
      AS852        587      428      159   27.1%   Telus Advanced Communications 
      AS7018       816      685      131   16.1%   AT&T 
      AS16473      198       77      121   61.1%   Bell South 
      AS6595       167       56      111   66.5%   DoD Education Activity Network As
      AS705        304      203      101   33.2%   UUNET Technologies, Inc. 
      AS4151       236      141       95   40.3%   USDA 
      AS19632       98        4       94   95.9%   Metropolis Intercom S.A. 
      AS1239       511      423       88   17.2%   Sprint 
      AS16814      104       19       85   81.7%   NSS, S.A. 
      AS12302      120       35       85   70.8%   SingNet 
      AS7046       328      244       84   25.6%   UUNET Technologies, Inc. 
      AS7303       148       68       80   54.1%   Telecom Argentina Stet-France Tel
      AS2048       181      104       77   42.5%   State of Louisiana 
      AS577        267      194       73   27.3%   Bell Advanced Communications Inc.
      AS4323       416      345       71   17.1%   Time Warner Communications, Inc. 
      AS724        220      154       66   30.0%   DLA Systems Automation Center 
      AS226        154       91       63   40.9%   Los Nettos 
      AS3464       166      104       62   37.3%   Alabama SuperComputer Network 
      AS19834       64        4       60   93.8%   NetForce, Inc. 
      AS10620       83       23       60   72.3%   TVCABLE BOGOTA 
      AS4755       169      110       59   34.9%   Videsh Sanchar Nigam Ltd. Autonom
      AS1          455      397       58   12.7%   GENUITY 
      AS3908       311      254       57   18.3%   Supernet, Inc. 
      AS16758       63        6       57   90.5%   IKON Office Solutions 
      AS209        312      256       56   17.9%   Qwest 
      AS9051        81       26       55   67.9%   INCONET Autonomous System
      AS3233       105       51       54   51.4%   RNC - Romanian Natioanal R&D Netw
      
      Total      55292    42691    12601   22.8%
      
      
      For the rest of the previous weeks gain information please see
      http://www.employees.org:80/~tbates/cidr-report.html
      
      2) Weekly Delta
      
      Please see
      http://www.employees.org:80/~tbates/cidr-report.html
      for this part of the report
      
      3) Interesting aggregates
      
      Please see
      http://www.employees.org:80/~tbates/cidr-report.html
      for this part of the report
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