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The Cidr Report

  • From: Tony Bates
  • Date: Fri Sep 01 15:08:02 2000

This is an auto-generated mail on Fri Sep  1 12:00:00 PDT 2000
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.

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      A summary of the last weeks changes in terms of withdrawn and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 xara.net for giving me access to their routing tables once a
day. 

Please send any comments about this report directly to me.

Check http://www.employees.org/~tbates/cidr-report.html for a daily
update of this report.


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

                        CIDR REPORT for 01Sep00


0) General Status

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

Date	Prefixes
250800	85144
260800	91672
270800	91299
280800	91282
290800	85417
300800	85709
310800	85345
010900	85543

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:                 6240

Number of ASes announcing only one prefix:        3082 (1039 cidr, 2043 classful)

Largest number of  cidr routes:                    589 announced by  AS705
Largest number of classful routes:                1076 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 01Sep00 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS10476        2        1        1   50.0%   Sinfonet,S.A Panama
AS10039        2        1        1   50.0%   mire.net
AS9983         1        1        0    0.0%   Australian Bureau of Statistics.
AS9982         1        1        0    0.0%   PAICHAI UNIVERSITY
AS9981         1        1        0    0.0%   Iworld Networking, Inc.
AS9979         1        1        0    0.0%   KOREA EXCHANGE BANK
AS9978         1        1        0    0.0%   The University of Seoul
AS9977         1        1        0    0.0%   IOSYSTEM
AS9974         1        1        0    0.0%   KOREA SECURITIES COMPUTER CORP. B
AS9973         1        1        0    0.0%   KEB Futures Co.
AS9968         1        1        0    0.0%   Kyobo Life Insurance
AS9966         1        1        0    0.0%   KORAMBANK
AS9962         1        1        0    0.0%   Sunchon National University
AS9960         1        1        0    0.0%   NEW C&C CO.,LTD.
AS9954         1        1        0    0.0%   Kunsan National University
AS9953         1        1        0    0.0%   Hyundai Eng. & Const. Co., Ltd.
AS9951         1        1        0    0.0%   D3C Net
AS9950         1        1        0    0.0%   INT Co.,Ltd.
AS9935         1        1        0    0.0%   AGNS-Customer-KW
AS9927         1        1        0    0.0%   A Multihomed ISP Company
AS9912         1        1        0    0.0%   Quality Internet Services
AS9891         1        1        0    0.0%   iGreatLink.com
AS9879         1        1        0    0.0%   OGILVY ASIA/PACIFIC
AS9877         1        1        0    0.0%   Ngee Ann Polytechnic Computer Cen
AS9871         1        1        0    0.0%   JC Entertainment Co.
AS9868         1        1        0    0.0%   Catholic University of TAEGU HYOS
AS9866         1        1        0    0.0%   LGCAPITAL
AS9862         1        1        0    0.0%   YES24 CO. LTD
AS9859         1        1        0    0.0%   ChungCheong College
AS9856         1        1        0    0.0%   ec-Bank co., Ltd.


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