The Cidr Report

Sat Mar 10 07:00:02 UTC 2001

This is an auto-generated mail on Fri Mar  9 23:00:00 PST 2001
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      A summary of the last weeks changes in terms of withdrawn and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 09Mar01

0) General Status

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

Date	Prefixes
020301	97761
030301	97965
040301	99978
050301	97915
060301	98487
070301	98007
080301	97909
090301	98107

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

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

*** Bogus 91.16.23.0/24 from AS11770

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

Number of ASes in routing system:                10176

Number of ASes announcing only one prefix:        5971 (3385 cidr, 2586 classful)

Largest number of  cidr routes:                    954 announced by  AS701
Largest number of classful routes:                1612 announced by AS1221

1) Gains by aggregating at the origin AS level

 --- 09Mar01 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS1221      1612     1211      401   24.9%   Telstra Pty Ltd
AS2764       754      539      215   28.5%   connect.com.au pty ltd 
AS701       1416     1258      158   11.2%   UUNET Technologies, Inc. 
AS8006       145       19      126   86.9%   Systems & Software Consortium, In
AS7545       190       70      120   63.2%   TPG Internet Pty Ltd
AS9269       162       53      109   67.3%   Internet service Provider in Hong
AS6429       213      107      106   49.8%   RdC Internet 
AS6595       161       62       99   61.5%   DoD Education Activity Network As
AS705        331      238       93   28.1%   UUNET Technologies, Inc. 
AS4293       380      287       93   24.5%   Cable & Wireless USA 
AS13999      102       11       91   89.2%   Mega Cable S.A. de C.V. 
AS8013       324      238       86   26.5%   PSINet Ltd. Canada 
AS4151       229      147       82   35.8%   USDA 
AS7018       648      569       79   12.2%   AT&T 
AS4755       209      130       79   37.8%   Videsh Sanchar Nigam Ltd. Autonom
AS1942       136       64       72   52.9%   FR-CICG-GRENOBLE
AS816        386      315       71   18.4%   UUNET Canada 
AS577        240      170       70   29.2%   Bell Advanced Communications Inc.
AS174        496      428       68   13.7%   PSINet Inc. 
AS724        214      148       66   30.8%   DLA Systems Automation Center 
AS5106       101       37       64   63.4%   Ameritech Advanced Data Services,
AS11170       64        1       63   98.4%   Bewell Net 
AS7657       169      108       61   36.1%   The Internet Group Limited
AS3749       120       59       61   50.8%   Tennessee Board of Regents 
AS3464       153       93       60   39.2%   Alabama SuperComputer Network 
AS226        154       94       60   39.0%   Los Nettos 
AS376        133       76       57   42.9%   Reseau Interordinateurs Scientiqu
AS16758       63        6       57   90.5%   IKON Office Solutions 
AS6413        67       11       56   83.6%   Southern Online Systems, Inc. 
AS7568        83       28       55   66.3%   C.S. Communications 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