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The Cidr Report
From: Tony Bates <tbates () cisco com>
Date: Fri, 09 Jun 2000 12:00:02 -0700



This is an auto-generated mail on Fri Jun  9 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      A summary of the last weeks changes in terms of withdrawn and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 09Jun00


0) General Status

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

Date    Prefixes
110400  75403
120400  75730
130400  75919
010500  76182
020500  76265
070600  78743
080600  78857
090600  78901

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
*** Bogus 109.177.9.0/24 from AS1785

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

Number of ASes in routing system:                 7613

Number of ASes announcing only one prefix:        4265 (2328 cidr, 1937 classful)

Largest number of  cidr routes:                    907 announced by  AS701
Largest number of classful routes:                1020 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 09Jun00 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS271        438      150      288   65.8%   BCnet Backbone
AS9269       203       28      175   86.2%   Hong Kong CTI
AS1221       578      405      173   29.9%   TELSTRA-AS
AS7046       511      347      164   32.1%   COQUI-NET PRTC Internet
AS9706       152       28      124   81.6%   Pusan Metropolitan City Office of
AS2609       127        8      119   93.7%   EUnet-TN
AS7545       167       68       99   59.3%   TPG Internet Pty Ltd
AS6429       209      117       92   44.0%   RDC-INTERNET
AS174        568      477       91   16.0%   Performance Systems International
AS9304       115       28       87   75.7%   Hutchcity
AS7496       127       40       87   68.5%   Power Up
AS7657       250      165       85   34.0%   The Internet Group Limited
AS705        339      262       77   22.7%   ALTERNET-AS
AS4293       312      237       75   24.0%   Internal ASN for C&W
AS577        250      178       72   28.8%   Bell Backbone
AS724        216      148       68   31.5%   DLA-ASNBLOCK-AS
AS9557        84       19       65   77.4%   Pakistan Telecommunication Compan
AS1727       140       79       61   43.6%   MRMS-WEST
AS3602       303      243       60   19.8%   Sprint Canada Inc.
AS3749       118       59       59   50.0%   TECNET
AS6595       104       47       57   54.8%   DODDSEUR
AS209        431      374       57   13.2%   Qwest Communications
AS4740       329      274       55   16.7%   Ozemail Pty Ltd (ASN-OZEMAIL)
AS7018       530      477       53   10.0%   AT&T WorldNet Service Backbone
AS7568        66       14       52   78.8%   C.S. Communications Co., Ltd.
AS701       1020      968       52    5.1%   Alternet
AS6528        48        6       42   87.5%   WORLD-LYNX
AS6499        97       56       41   42.3%   Brooks Fiber Properties, Inc.
AS6629        67       27       40   59.7%   NOAA-AS
AS4755       128       88       40   31.2%   Videsh Sanchar Nigam Ltd. India


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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