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The Cidr Report
From: Tony Bates <tbates () cisco com>
Date: Fri, 16 Jun 2000 12:00:02 -0700



This is an auto-generated mail on Fri Jun 16 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      A summary of the last weeks changes in terms of withdrawn and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 16Jun00


0) General Status

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

Date    Prefixes
090600  78901
100600  79105
110600  79003
120600  79282
130600  79244
140600  79247
150600  79514
160600  80091

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:                 7668

Number of ASes announcing only one prefix:        4319 (2370 cidr, 1949 classful)

Largest number of  cidr routes:                    935 announced by  AS701
Largest number of classful routes:                1018 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 16Jun00 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS271        439      151      288   65.6%   BCnet Backbone
AS1221       580      409      171   29.5%   TELSTRA-AS
AS7046       504      344      160   31.7%   COQUI-NET PRTC Internet
AS9269       193       46      147   76.2%   Hong Kong CTI
AS9706       154       21      133   86.4%   Pusan Metropolitan City Office of
AS2609       127        8      119   93.7%   EUnet-TN
AS7657       269      166      103   38.3%   The Internet Group Limited
AS7545       167       68       99   59.3%   TPG Internet Pty Ltd
AS6429       208      116       92   44.2%   RDC-INTERNET
AS9304       117       26       91   77.8%   Hutchcity
AS7496       125       40       85   68.0%   Power Up
AS577        286      206       80   28.0%   Bell Backbone
AS4293       316      238       78   24.7%   Internal ASN for C&W
AS705        339      262       77   22.7%   ALTERNET-AS
AS174        522      446       76   14.6%   Performance Systems International
AS1727       165       92       73   44.2%   MRMS-WEST
AS9557        84       19       65   77.4%   Pakistan Telecommunication Compan
AS724        208      146       62   29.8%   DLA-ASNBLOCK-AS
AS3602       306      246       60   19.6%   Sprint Canada Inc.
AS3749       118       59       59   50.0%   TECNET
AS5106        85       27       58   68.2%   AADS-COLUMBUS
AS6595       104       47       57   54.8%   DODDSEUR
AS4740       333      277       56   16.8%   Ozemail Pty Ltd (ASN-OZEMAIL)
AS209        395      339       56   14.2%   Qwest Communications
AS7568        67       14       53   79.1%   C.S. Communications Co., Ltd.
AS7018       532      479       53   10.0%   AT&T WorldNet Service Backbone
AS376        120       68       52   43.3%   RISQ
AS1591       173      122       51   29.5%   HQASC MEDNET-ASN
AS1785       364      315       49   13.5%   NYSERNet Backbone
AS701       1018      970       48    4.7%   Alternet


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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