[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, 21 Sep 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 Sep 21 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            A summary of the last weeks changes in terms of withdrawn and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 21Sep01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      140901	102582
      150901	102950
      160901	102809
      170901	103092
      180901	103047
      190901	102981
      200901	103292
      210901	103625
      
      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:              11609
      
      Number of ASes announcing only one prefix:      6928 (3946 cidr, 2982 classful)
      
      Largest number of  cidr routes:                  854 announced by  AS701
      Largest number of classful routes:              1379 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 21Sep01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1259      956      303   24.1%   Telstra Pty Ltd
      AS701       1379     1176      203   14.7%   UUNET Technologies, Inc. 
      AS4151       296      169      127   42.9%   USDA 
      AS577        314      193      121   38.5%   Bell Advanced Communications Inc.
      AS4293       379      270      109   28.8%   Cable & Wireless USA 
      AS6595       166       59      107   64.5%   DoD Education Activity Network As
      AS705        249      152       97   39.0%   UUNET Technologies, Inc. 
      AS7018       769      672       97   12.6%   AT&T 
      AS6429       196      101       95   48.5%   AT&T Chile Internet S.A. 
      AS13999      109       15       94   86.2%   Mega Cable S.A. de C.V. 
      AS2048       212      120       92   43.4%   State of Louisiana 
      AS16473      154       65       89   57.8%   Bell South 
      AS4755       210      124       86   41.0%   Videsh Sanchar Nigam Ltd. Autonom
      AS12302       98       28       70   71.4%   MobiFon S.A.
      AS4200       142       74       68   47.9%   Apex Global Information Services,
      AS1239       465      398       67   14.4%   Sprint 
      AS7046       317      252       65   20.5%   UUNET Technologies, Inc. 
      AS6471       127       62       65   51.2%   ENTEL CHILE S.A. 
      AS724        218      155       63   28.9%   DLA Systems Automation Center 
      AS17557      125       65       60   48.0%   Pakistan Telecom
      AS19632       67        9       58   86.6%   Metropolis Intercom S.A. 
      AS16758       63        6       57   90.5%   IKON Office Solutions 
      AS209        313      258       55   17.6%   Qwest 
      AS703        301      249       52   17.3%   UUNET Technologies, Inc. 
      AS3464       147       95       52   35.4%   Alabama SuperComputer Network 
      AS226        145       93       52   35.9%   Los Nettos 
      AS17561      113       62       51   45.1%   Internet service provision to Wes
      AS1          535      484       51    9.5%   BBN Planet 
      AS4323       249      199       50   20.1%   Time Warner Communications, Inc. 
      AS10620       67       20       47   70.1%   TVCABLE BOGOTA 
      
      
      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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