The Cidr Report

Sat Jul 6 06:00:03 UTC 2002

This is an auto-generated mail on Fri Jul  5 23:00:01 PDT 2002
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.

Check http://www.employees.org/~tbates/cidr-report.html for a daily
update of this report.

NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for
the regional version of this report.

NEW: Check http://www.employees.org/~tbates/autnums.html for a complete
list of autonomous system number to name mappings as used by the CIDR-Report.

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      A summary of the last weeks changes in terms of withdrawn and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 amount of withdrawls.

   3) Interesting aggregates

      Interesting here means not an aggregate made as a set of 
      classful routes.      

Thanks to GX Networks for giving me access to their routing tables once a
day. 

Please send any comments about this report directly to CIDR Report <cidr-report at cisco.com>.

------------------------------------------------------------------------------

                        CIDR REPORT for 05Jul02

0) General Status

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

Date	Prefixes
280602	111076
290602	111083
300602	111065
010702	111089
020702	111046
030702	110779
040702	110898
050702	110820

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:              13188

Number of ASes announcing only one prefix:      8046 (4527 cidr, 3519 classful)

Largest number of  cidr routes:                  613 announced by  AS701
Largest number of classful routes:              1234 announced by  AS701

1) Gains by aggregating at the origin AS level

 --- 05Jul02 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS1221      1098      847      251   22.9%   Telstra Pty Ltd
AS701       1234      987      247   20.0%   UUNET Technologies, Inc. 
AS17557      305      108      197   64.6%   Pakistan Telecom
AS6595       210       58      152   72.4%   DoD Education Activity Network As
AS852        482      352      130   27.0%   Telus Advanced Communications 
AS7018       804      675      129   16.0%   AT&T 
AS16473      194       76      118   60.8%   Bell South 
AS4151       237      142       95   40.1%   USDA 
AS19632       99        5       94   94.9%   Metropolis Intercom S.A. 
AS1239       520      426       94   18.1%   Sprint 
AS7303       157       69       88   56.1%   Telecom Argentina Stet-France Tel
AS16814      105       20       85   81.0%   NSS, S.A. 
AS7046       313      230       83   26.5%   UUNET Technologies, Inc. 
AS226        171       88       83   48.5%   Los Nettos 
AS2048       180      103       77   42.8%   State of Louisiana 
AS4755       212      136       76   35.8%   Videsh Sanchar Nigam Ltd. Autonom
AS577        262      190       72   27.5%   Bell Advanced Communications Inc.
AS4323       407      338       69   17.0%   Time Warner Communications, Inc. 
AS724        229      161       68   29.7%   DLA Systems Automation Center 
AS3464       163      102       61   37.4%   Alabama SuperComputer Network 
AS19834       64        4       60   93.8%   NetForce, Inc. 
AS10620       83       23       60   72.3%   TVCABLE BOGOTA 
AS9498        84       27       57   67.9%   BHARTI BT INTERNET LTD.
AS16758       63        6       57   90.5%   IKON Office Solutions 
AS1          441      384       57   12.9%   GENUITY 
AS9051        82       26       56   68.3%   INCONET Autonomous System
AS3908       295      239       56   19.0%   Supernet, Inc. 
AS209        309      255       54   17.5%   Qwest 
AS6535        67       17       50   74.6%   Chilesat Servicios  Empresariales
AS702        519      473       46    8.9%   UUNET Technologies, Inc. 

Total      54644    42182    12462   22.8%

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