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The Cidr Report




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

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      A summary of the last weeks changes in terms of withdrawn and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 at cisco.com>.


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

                        CIDR REPORT for 05Oct01


0) General Status

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

Date	Prefixes
280901	104483
290901	104988
300901	104943
011001	105036
021001	105301
031001	104637
041001	104254
051001	104449

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:              11739

Number of ASes announcing only one prefix:      6989 (3974 cidr, 3015 classful)

Largest number of  cidr routes:                  844 announced by  AS701
Largest number of classful routes:              1394 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 05Oct01 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS1221      1258      958      300   23.8%   Telstra Pty Ltd
AS4151       302      170      132   43.7%   USDA 
AS16473      201       76      125   62.2%   Bell South 
AS577        307      187      120   39.1%   Bell Advanced Communications Inc.
AS13999      131       20      111   84.7%   Mega Cable S.A. de C.V. 
AS4293       375      267      108   28.8%   Cable & Wireless USA 
AS2048       215      116       99   46.0%   State of Louisiana 
AS4755       208      131       77   37.0%   Videsh Sanchar Nigam Ltd. Autonom
AS1239       481      410       71   14.8%   Sprint 
AS3464       163       95       68   41.7%   Alabama SuperComputer Network 
AS12302       98       32       66   67.3%   MobiFon S.A.
AS11686      192      126       66   34.4%   Education Networks of America 
AS6471       128       63       65   50.8%   ENTEL CHILE S.A. 
AS4200       137       72       65   47.4%   Apex Global Information Services,
AS17557      124       65       59   47.6%   Pakistan Telecom
AS16758       63        6       57   90.5%   IKON Office Solutions 
AS209        309      254       55   17.8%   Qwest 
AS306         60        6       54   90.0%   National Guard Bureau 
AS3908       291      238       53   18.2%   Supernet, Inc. 
AS400        137       85       52   38.0%   Headquarters Standard Systems Cen
AS226        145       93       52   35.9%   Los Nettos 
AS17561      113       62       51   45.1%   Internet service provision to Wes
AS1          537      486       51    9.5%   BBN Planet 
AS637        106       58       48   45.3%   Department of Navy 
AS4323       246      198       48   19.5%   Time Warner Communications, Inc. 
AS1913       152      104       48   31.6%   Defense Logistics Agency 
AS10620       68       21       47   69.1%   TVCABLE BOGOTA 
AS15290      246      200       46   18.7%   AT&T Canada IES 
AS376        120       76       44   36.7%   Reseau Interordinateurs Scientiqu
AS5416        51        9       42   82.4%   BATELCO-BH


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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