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The Cidr Report




This is an auto-generated mail on Fri Aug  9 23:00:01 PDT 2002
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      A summary of the last weeks changes in terms of withdrawn and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 amount 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.com>.



------------------------------------------------------------------------------

                        CIDR REPORT for 09Aug02


0) General Status

Table History
-------------

Date	Prefixes
020802	112557
030802	112425
040802	112467
050802	112471
060802	112574
070802	112311
080802	112696
090802	112833

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:              13412

Number of ASes announcing only one prefix:      8157 (4598 cidr, 3559 classful)

Largest number of  cidr routes:                  710 announced by AS3908
Largest number of classful routes:              1210 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 09Aug02 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS1221      1090      836      254   23.3%   Telstra Pty Ltd
AS701       1210      970      240   19.8%   UUNET Technologies, Inc. 
AS17557      295      101      194   65.8%   Pakistan Telecom
AS6595       223       55      168   75.3%   DoD Education Activity Network As
AS852        546      405      141   25.8%   Telus Advanced Communications 
AS16473      196       75      121   61.7%   Bell South 
AS7018       798      680      118   14.8%   AT&T 
AS4151       238      143       95   39.9%   USDA 
AS19632       99        5       94   94.9%   Metropolis Intercom S.A. 
AS12302      120       27       93   77.5%   MobiFon S.A.
AS7303       159       68       91   57.2%   Telecom Argentina Stet-France Tel
AS16814      105       20       85   81.0%   NSS, S.A. 
AS226        171       88       83   48.5%   Los Nettos 
AS1239       500      418       82   16.4%   Sprint 
AS1          457      382       75   16.4%   GENUITY 
AS7046       293      219       74   25.3%   UUNET Technologies, Inc. 
AS577        267      193       74   27.7%   Bell Advanced Communications Inc.
AS2048       178      104       74   41.6%   State of Louisiana 
AS4755       200      129       71   35.5%   Videsh Sanchar Nigam Ltd. Autonom
AS4323       411      340       71   17.3%   Time Warner Communications, Inc. 
AS2149       327      257       70   21.4%   Performance Systems, Inc. 
AS724        222      159       63   28.4%   DLA Systems Automation Center 
AS4293       246      185       61   24.8%   Cable & Wireless USA 
AS3464       165      104       61   37.0%   Alabama SuperComputer Network 
AS19834       64        4       60   93.8%   NetForce, Inc. 
AS10620       85       25       60   70.6%   TVCABLE BOGOTA 
AS9498        86       29       57   66.3%   BHARTI BT INTERNET LTD.
AS5515       243      186       57   23.5%   Sonera Finland Autonomous System
AS16758       63        6       57   90.5%   IKON Office Solutions 
AS3908       286      230       56   19.6%   Supernet, Inc. 

Total      55400    42650    12750   23.0%


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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