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The Cidr Report

  • From: CIDR Report
  • Date: Sat Feb 09 02:03:44 2002


This is an auto-generated mail on Fri Feb  8 23:00:00 PST 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      A summary of the last weeks changes in terms of withdrawn and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 amont 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@cisco.com>.


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

                        CIDR REPORT for 08Feb02


0) General Status

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

Date	Prefixes
010202	105568
020202	105595
030202	105578
040202	105667
050202	105600
060202	105584
070202	105721
080202	105598

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


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

*** Bogus 96.0.0.0/20 from AS3549

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

Number of ASes in routing system:              12381

Number of ASes announcing only one prefix:      7537 (4280 cidr, 3257 classful)

Largest number of  cidr routes:                  717 announced by  AS701
Largest number of classful routes:              1357 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 08Feb02 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS1221      1156      892      264   22.8%   Telstra Pty Ltd
AS701       1357     1126      231   17.0%   UUNET Technologies, Inc. 
AS577        323      197      126   39.0%   Bell Advanced Communications Inc.
AS16473      198       77      121   61.1%   Bell South 
AS7018       821      703      118   14.4%   AT&T 
AS4151       261      149      112   42.9%   USDA 
AS6595       168       60      108   64.3%   DoD Education Activity Network As
AS17557      195       88      107   54.9%   Pakistan Telecom
AS705        293      189      104   35.5%   UUNET Technologies, Inc. 
AS852        425      325      100   23.5%   Telus Advanced Communications 
AS7046       329      230       99   30.1%   UUNET Technologies, Inc. 
AS19632       94        9       85   90.4%   Metropolis Intercom S.A. 
AS2048       185      105       80   43.2%   State of Louisiana 
AS12302      110       31       79   71.8%   MobiFon S.A.
AS1239       475      398       77   16.2%   Sprint 
AS4755       221      150       71   32.1%   Videsh Sanchar Nigam Ltd. Autonom
AS4323       406      340       66   16.3%   Time Warner Communications, Inc. 
AS703        279      217       62   22.2%   UUNET Technologies, Inc. 
AS3464       157       97       60   38.2%   Alabama SuperComputer Network 
AS7303       107       49       58   54.2%   Telecom Argentina Stet-France Tel
AS724        209      151       58   27.8%   DLA Systems Automation Center 
AS16758       63        6       57   90.5%   IKON Office Solutions 
AS3908       320      264       56   17.5%   Supernet, Inc. 
AS226        145       89       56   38.6%   Los Nettos 
AS13999       70       14       56   80.0%   Mega Cable S.A. de C.V. 
AS19834       63        8       55   87.3%   NetForce, Inc. 
AS702        654      600       54    8.3%   UUNET Technologies, Inc. 
AS1          491      438       53   10.8%   BBN Planet 
AS2149       308      256       52   16.9%   Performance Systems, Inc. 
AS9051        73       22       51   69.9%   INCONET Autonomous System

Total      53855    42131    11724   21.8%


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




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