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The Cidr Report
From: Tony Bates <tbates () cisco com>
Date: Fri, 30 Jun 2000 12:00:02 -0700



This is an auto-generated mail on Fri Jun 30 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      A summary of the last weeks changes in terms of withdrawn and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 30Jun00


0) General Status

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

Date    Prefixes
230600  80236
240600  80187
250600  80366
260600  80526
270600  80814
280600  80884
290600  80973
300600  80928

Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.


Possible Bogus Routes
---------------------

*** Bogus 65.56.64.0/21 from AS2941

AS Summary
----------

Number of ASes in routing system:                 7777

Number of ASes announcing only one prefix:        4376 (2400 cidr, 1976 classful)

Largest number of  cidr routes:                    964 announced by  AS701
Largest number of classful routes:                1070 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 30Jun00 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS271        436      149      287   65.8%   BCnet Backbone
AS1221       645      445      200   31.0%   TELSTRA-AS
AS7046       534      360      174   32.6%   COQUI-NET PRTC Internet
AS9269       183       55      128   69.9%   Hong Kong CTI
AS9706       152       26      126   82.9%   Pusan Metropolitan City Office of
AS2609       127       12      115   90.6%   EUnet-TN
AS9304       122       18      104   85.2%   Hutchcity
AS7657       293      190      103   35.2%   The Internet Group Limited
AS7545       153       55       98   64.1%   TPG Internet Pty Ltd
AS6429       210      118       92   43.8%   RDC-INTERNET
AS174        563      471       92   16.3%   Performance Systems International
AS7496       127       42       85   66.9%   Power Up
AS4293       328      243       85   25.9%   Internal ASN for C&W
AS705        343      263       80   23.3%   ALTERNET-AS
AS701       1070      998       72    6.7%   Alternet
AS577        250      178       72   28.8%   Bell Backbone
AS724        229      158       71   31.0%   DLA-ASNBLOCK-AS
AS3908       274      205       69   25.2%   Supernet, Inc.
AS1727       152       83       69   45.4%   MRMS-WEST
AS9557        95       28       67   70.5%   Pakistan Telecommunication Compan
AS3602       304      245       59   19.4%   Sprint Canada Inc.
AS6595       108       50       58   53.7%   DODDSEUR
AS5106        88       30       58   65.9%   AADS-COLUMBUS
AS7568        81       24       57   70.4%   C.S. Communications Co., Ltd.
AS4740       331      275       56   16.9%   Ozemail Pty Ltd (ASN-OZEMAIL)
AS3749       112       56       56   50.0%   TECNET
AS7018       545      492       53    9.7%   AT&T WorldNet Service Backbone
AS1785       361      312       49   13.6%   NYSERNet Backbone
AS209        257      209       48   18.7%   Qwest Communications
AS14562       80       35       45   56.2%   UNKNOWN


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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