[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, 17 Aug 2001 23:00:04 -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 Aug 17 23:00:00 PDT 2001
      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            A summary of the last weeks changes in terms of withdrawn and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 amont 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 17Aug01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      100801	102845
      110801	102706
      120801	102533
      130801	102657
      140801	102662
      150801	102621
      160801	102577
      170801	102866
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 82.105.0.0/16 from AS3269
      *** Bogus 82.105.128.0/17 from AS3269
      
      AS Summary
      ----------
      
      Number of ASes in routing system:              11408
      
      Number of ASes announcing only one prefix:      6792 (3875 cidr, 2917 classful)
      
      Largest number of  cidr routes:                  852 announced by  AS701
      Largest number of classful routes:              1406 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 17Aug01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1258      970      288   22.9%   Telstra Pty Ltd
      AS701       1406     1188      218   15.5%   UUNET Technologies, Inc. 
      AS2551       798      637      161   20.2%   ICG NetAhead, Inc 
      AS4151       289      165      124   42.9%   USDA 
      AS4293       379      270      109   28.8%   Cable & Wireless USA 
      AS6595       164       58      106   64.6%   DoD Education Activity Network As
      AS577        294      188      106   36.1%   Bell Advanced Communications Inc.
      AS16473      173       70      103   59.5%   Bell South 
      AS13999      113       11      102   90.3%   Mega Cable S.A. de C.V. 
      AS705        245      145      100   40.8%   UUNET Technologies, Inc. 
      AS6429       200      103       97   48.5%   AT&T Chile Internet S.A. 
      AS7018       741      652       89   12.0%   AT&T 
      AS4755       210      123       87   41.4%   Videsh Sanchar Nigam Ltd. Autonom
      AS7046       324      254       70   21.6%   UUNET Technologies, Inc. 
      AS724        231      164       67   29.0%   DLA Systems Automation Center 
      AS6471       123       60       63   51.2%   ENTEL CHILE S.A. 
      AS12302       94       33       61   64.9%   MobiFon S.A.
      AS1239       457      398       59   12.9%   Sprint 
      AS4200       126       68       58   46.0%   Apex Global Information Services,
      AS3464       148       91       57   38.5%   Alabama SuperComputer Network 
      AS16758       63        6       57   90.5%   IKON Office Solutions 
      AS703        309      254       55   17.8%   UUNET Technologies, Inc. 
      AS3908       320      266       54   16.9%   Supernet, Inc. 
      AS226        147       94       53   36.1%   Los Nettos 
      AS1          543      490       53    9.8%   BBN Planet 
      AS6413        65       13       52   80.0%   Southern Online Systems, Inc. 
      AS209        284      232       52   18.3%   Qwest 
      AS4323       240      189       51   21.2%   Time Warner Communications, Inc. 
      AS17561      113       62       51   45.1%   Internet service provision to Wes
      AS855        145       95       50   34.5%   Canadian Research Network 
      
      
      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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