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The Cidr Report
From: Tony Bates <tbates () cisco com>
Date: Fri, 02 Jun 2000 12:00:02 -0700



This is an auto-generated mail on Fri Jun  2 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      A summary of the last weeks changes in terms of withdrawn and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 02Jun00


0) General Status

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

Date    Prefixes
080400  75151
090400  75137
100400  75215
110400  75403
120400  75730
130400  75919
010500  76182
020500  76265

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:                 5027

Number of ASes announcing only one prefix:        1865 (0 cidr, 1865 classful)

Largest number of  cidr routes:                      0 announced by       
Largest number of classful routes:                1002 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 02Jun00 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS271        437      152      285   65.2%   BCnet Backbone
AS7046       500      336      164   32.8%   COQUI-NET PRTC Internet
AS9269       167       29      138   82.6%   Hong Kong CTI
AS9706       153       26      127   83.0%   Pusan Metropolitan City Office of
AS1221       529      408      121   22.9%   TELSTRA-AS
AS2609       123       18      105   85.4%   EUnet-TN
AS7545       164       66       98   59.8%   TPG Internet Pty Ltd
AS7657       264      168       96   36.4%   The Internet Group Limited
AS174        552      464       88   15.9%   Performance Systems International
AS7496       126       39       87   69.0%   Power Up
AS9304       109       24       85   78.0%   Hutchcity
AS9557       100       17       83   83.0%   Pakistan Telecommunication Compan
AS6429       204      121       83   40.7%   RDC-INTERNET
AS577        248      172       76   30.6%   Bell Backbone
AS7029       146       71       75   51.4%   ALLTELNET
AS209        463      392       71   15.3%   Qwest Communications
AS7018       529      463       66   12.5%   AT&T WorldNet Service Backbone
AS1727       162       98       64   39.5%   MRMS-WEST
AS4293       253      190       63   24.9%   Internal ASN for C&W
AS724        205      143       62   30.2%   DLA-ASNBLOCK-AS
AS7260       111       50       61   55.0%   NORLIGHT
AS705        270      209       61   22.6%   ALTERNET-AS
AS3749       121       61       60   49.6%   TECNET
AS3602       307      249       58   18.9%   Sprint Canada Inc.
AS6595       107       50       57   53.3%   DODDSEUR
AS4740       336      279       57   17.0%   Ozemail Pty Ltd (ASN-OZEMAIL)
AS5106        81       29       52   64.2%   AADS-COLUMBUS
AS7568        63       18       45   71.4%   C.S. Communications Co., Ltd.
AS816        308      266       42   13.6%   UUNET Canada (ASN-UUNETCA-AS4)
AS6528        48        6       42   87.5%   WORLD-LYNX


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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