[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, 26 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 26 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            A summary of the last weeks changes in terms of withdrawn and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 26Oct01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      191001	104997
      201001	104988
      211001	104985
      221001	105173
      231001	105209
      241001	104135
      251001	103926
      261001	104244
      
      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:               8804
      
      Number of ASes announcing only one prefix:      3995 (3995 cidr, 0 classful)
      
      Largest number of  cidr routes:                  846 announced by  AS701
      Largest number of classful routes:                 0 announced by       
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 26Oct01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1223      940      283   23.1%   Telstra Pty Ltd
      AS4151       298      164      134   45.0%   USDA 
      AS13999      136        9      127   93.4%   Mega Cable S.A. de C.V. 
      AS16473      196       75      121   61.7%   Bell South 
      AS4293       364      257      107   29.4%   Cable & Wireless USA 
      AS2048       215      116       99   46.0%   State of Louisiana 
      AS271        158       71       87   55.1%   University of British Columbia 
      AS4755       215      133       82   38.1%   Videsh Sanchar Nigam Ltd. Autonom
      AS1239       476      400       76   16.0%   Sprint 
      AS12302      106       35       71   67.0%   MobiFon S.A.
      AS17557      138       71       67   48.6%   Pakistan Telecom
      AS4200       131       66       65   49.6%   Apex Global Information Services,
      AS3464       161       96       65   40.4%   Alabama SuperComputer Network 
      AS19632       72        7       65   90.3%   Metropolis Intercom S.A. 
      AS16758       63        6       57   90.5%   IKON Office Solutions 
      AS209        304      249       55   18.1%   Qwest 
      AS226        144       91       53   36.8%   Los Nettos 
      AS4323       273      221       52   19.0%   Time Warner Communications, Inc. 
      AS3908       298      247       51   17.1%   Supernet, Inc. 
      AS17561      111       60       51   45.9%   Internet service provision to Wes
      AS376        121       73       48   39.7%   Reseau Interordinateurs Scientiqu
      AS10620       69       21       48   69.6%   TVCABLE BOGOTA 
      AS1          517      469       48    9.3%   BBN Planet 
      AS16814       65       18       47   72.3%   NSS, S.A. 
      AS15288       71       24       47   66.2%   Alcanet International NA 
      AS15290      247      201       46   18.6%   AT&T Canada IES 
      AS2652       129       85       44   34.1%   Government Telecommunications and
      AS10292       70       27       43   61.4%   TELECOMMUNICATIONS OF JAMAICA 
      AS5416        51        9       42   82.4%   BATELCO-BH
      AS5103        76       34       42   55.3%   Ameritech Advanced Data Services,
      
      
      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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