[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, 05 Oct 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 Oct  5 23:00:01 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            A summary of the last weeks changes in terms of withdrawn and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 05Oct01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      280901	104483
      290901	104988
      300901	104943
      011001	105036
      021001	105301
      031001	104637
      041001	104254
      051001	104449
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      
      AS Summary
      ----------
      
      Number of ASes in routing system:              11739
      
      Number of ASes announcing only one prefix:      6989 (3974 cidr, 3015 classful)
      
      Largest number of  cidr routes:                  844 announced by  AS701
      Largest number of classful routes:              1394 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 05Oct01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1258      958      300   23.8%   Telstra Pty Ltd
      AS4151       302      170      132   43.7%   USDA 
      AS16473      201       76      125   62.2%   Bell South 
      AS577        307      187      120   39.1%   Bell Advanced Communications Inc.
      AS13999      131       20      111   84.7%   Mega Cable S.A. de C.V. 
      AS4293       375      267      108   28.8%   Cable & Wireless USA 
      AS2048       215      116       99   46.0%   State of Louisiana 
      AS4755       208      131       77   37.0%   Videsh Sanchar Nigam Ltd. Autonom
      AS1239       481      410       71   14.8%   Sprint 
      AS3464       163       95       68   41.7%   Alabama SuperComputer Network 
      AS12302       98       32       66   67.3%   MobiFon S.A.
      AS11686      192      126       66   34.4%   Education Networks of America 
      AS6471       128       63       65   50.8%   ENTEL CHILE S.A. 
      AS4200       137       72       65   47.4%   Apex Global Information Services,
      AS17557      124       65       59   47.6%   Pakistan Telecom
      AS16758       63        6       57   90.5%   IKON Office Solutions 
      AS209        309      254       55   17.8%   Qwest 
      AS306         60        6       54   90.0%   National Guard Bureau 
      AS3908       291      238       53   18.2%   Supernet, Inc. 
      AS400        137       85       52   38.0%   Headquarters Standard Systems Cen
      AS226        145       93       52   35.9%   Los Nettos 
      AS17561      113       62       51   45.1%   Internet service provision to Wes
      AS1          537      486       51    9.5%   BBN Planet 
      AS637        106       58       48   45.3%   Department of Navy 
      AS4323       246      198       48   19.5%   Time Warner Communications, Inc. 
      AS1913       152      104       48   31.6%   Defense Logistics Agency 
      AS10620       68       21       47   69.1%   TVCABLE BOGOTA 
      AS15290      246      200       46   18.7%   AT&T Canada IES 
      AS376        120       76       44   36.7%   Reseau Interordinateurs Scientiqu
      AS5416        51        9       42   82.4%   BATELCO-BH
      
      
      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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