[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, 28 Sep 2001 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 Sep 28 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            A summary of the last weeks changes in terms of withdrawn and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 28Sep01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      210901	103625
      220901	103684
      230901	103666
      240901	103680
      250901	103629
      260901	103632
      270901	104968
      280901	104483
      
      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:              11715
      
      Number of ASes announcing only one prefix:      6979 (3955 cidr, 3024 classful)
      
      Largest number of  cidr routes:                  855 announced by  AS701
      Largest number of classful routes:              1389 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 28Sep01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1262      961      301   23.9%   Telstra Pty Ltd
      AS4151       299      171      128   42.8%   USDA 
      AS16473      201       76      125   62.2%   Bell South 
      AS577        306      187      119   38.9%   Bell Advanced Communications Inc.
      AS13999      132       16      116   87.9%   Mega Cable S.A. de C.V. 
      AS6595       170       60      110   64.7%   DoD Education Activity Network As
      AS4293       376      267      109   29.0%   Cable & Wireless USA 
      AS2048       209      115       94   45.0%   State of Louisiana 
      AS6429       195      102       93   47.7%   AT&T Chile Internet S.A. 
      AS4755       213      131       82   38.5%   Videsh Sanchar Nigam Ltd. Autonom
      AS12302       98       28       70   71.4%   MobiFon S.A.
      AS1239       471      402       69   14.6%   Sprint 
      AS4200       142       74       68   47.9%   Apex Global Information Services,
      AS6471       128       63       65   50.8%   ENTEL CHILE S.A. 
      AS17557      128       65       63   49.2%   Pakistan Telecom
      AS3464       157       96       61   38.9%   Alabama SuperComputer Network 
      AS19632       67        9       58   86.6%   Metropolis Intercom S.A. 
      AS16758       63        6       57   90.5%   IKON Office Solutions 
      AS209        303      248       55   18.2%   Qwest 
      AS3908       283      230       53   18.7%   Supernet, Inc. 
      AS11686      160      107       53   33.1%   Education Networks of America 
      AS226        145       93       52   35.9%   Los Nettos 
      AS17561      113       62       51   45.1%   Internet service provision to Wes
      AS1          533      482       51    9.6%   BBN Planet 
      AS4323       247      197       50   20.2%   Time Warner Communications, Inc. 
      AS306         59       10       49   83.1%   National Guard Bureau 
      AS637        104       56       48   46.2%   Department of Navy 
      AS10620       68       21       47   69.1%   TVCABLE BOGOTA 
      AS1913       151      105       46   30.5%   Defense Logistics Agency 
      AS15290      244      199       45   18.4%   AT&T Canada IES 
      
      
      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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