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The Cidr Report

  • From: CIDR Report
  • Date: Sat Nov 03 02:05:13 2001


This is an auto-generated mail on Fri Nov  2 23:00:01 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.

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      A summary of the last weeks changes in terms of withdrawn and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 02Nov01


0) General Status

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

Date	Prefixes
271001	104354
281001	104082
281001	104104
291001	104430
301001	103922
311001	103786
011101	103634
021101	103427

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


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

*** Bogus 219.0.0.0/16 from AS17676
*** Bogus 219.1.0.0/23 from AS17676
*** Bogus 219.1.0.0/16 from AS17676
*** Bogus 219.2.0.0/16 from AS17676
*** Bogus 219.3.0.0/16 from AS17676
*** Bogus 219.4.0.0/16 from AS17676
*** Bogus 219.5.0.0/16 from AS17676
*** Bogus 219.6.0.0/23 from AS17676
*** Bogus 219.6.0.0/16 from AS17676
*** Bogus 219.7.0.0/16 from AS17676
*** Bogus 219.8.0.0/16 from AS17676
*** Bogus 219.9.0.0/16 from AS17676
*** Bogus 219.10.0.0/16 from AS17676
*** Bogus 219.11.0.0/16 from AS17676
*** Bogus 219.12.0.0/16 from AS17676
*** Bogus 219.13.0.0/16 from AS17676
*** Bogus 219.14.0.0/16 from AS17676
*** Bogus 219.15.0.0/16 from AS17676
*** Bogus 219.16.0.0/16 from AS17676
*** Bogus 219.17.0.0/16 from AS17676
*** Bogus 219.18.0.0/16 from AS17676
*** Bogus 219.19.0.0/16 from AS17676
*** Bogus 219.20.0.0/16 from AS17676
*** Bogus 219.21.0.0/16 from AS17676
*** Bogus 219.22.0.0/16 from AS17676
*** Bogus 219.23.0.0/16 from AS17676
*** Bogus 219.24.0.0/16 from AS17676
*** Bogus 219.25.0.0/16 from AS17676
*** Bogus 219.26.0.0/16 from AS17676
*** Bogus 219.27.0.0/16 from AS17676
*** Bogus 219.28.0.0/16 from AS17676
*** Bogus 219.29.0.0/16 from AS17676
*** Bogus 219.30.0.0/16 from AS17676
*** Bogus 219.31.0.0/16 from AS17676
*** Bogus 219.32.0.0/16 from AS17676
*** Bogus 219.33.0.0/16 from AS17676
*** Bogus 219.34.0.0/16 from AS17676
*** Bogus 219.35.0.0/16 from AS17676
*** Bogus 219.36.0.0/16 from AS17676
*** Bogus 219.37.0.0/16 from AS17676
*** Bogus 219.38.0.0/16 from AS17676
*** Bogus 219.39.0.0/16 from AS17676
*** Bogus 219.40.0.0/16 from AS17676
*** Bogus 219.41.0.0/16 from AS17676
*** Bogus 219.42.0.0/16 from AS17676
*** Bogus 219.43.0.0/16 from AS17676
*** Bogus 219.44.0.0/16 from AS17676
*** Bogus 219.45.0.0/16 from AS17676
*** Bogus 219.46.0.0/16 from AS17676
*** Bogus 219.47.0.0/16 from AS17676
*** Bogus 219.48.0.0/16 from AS17676
*** Bogus 219.49.0.0/16 from AS17676
*** Bogus 219.50.0.0/16 from AS17676
*** Bogus 219.51.0.0/16 from AS17676
*** Bogus 219.52.0.0/16 from AS17676
*** Bogus 219.53.0.0/16 from AS17676
*** Bogus 219.54.0.0/16 from AS17676
*** Bogus 219.55.0.0/16 from AS17676
*** Bogus 219.56.0.0/16 from AS17676
*** Bogus 219.57.0.0/16 from AS17676
*** Bogus 219.58.0.0/16 from AS17676
*** Bogus 219.59.0.0/16 from AS17676
*** Bogus 219.60.0.0/16 from AS17676
*** Bogus 219.61.0.0/16 from AS17676
*** Bogus 219.62.0.0/16 from AS17676
*** Bogus 219.63.0.0/16 from AS17676

AS Summary
----------
Number of ASes in routing system:               8829

Number of ASes announcing only one prefix:      4020 (4020 cidr, 0 classful)

Largest number of  cidr routes:                  818 announced by  AS701
Largest number of classful routes:                 0 announced by       



1) Gains by aggregating at the origin AS level

 --- 02Nov01 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS1221      1214      934      280   23.1%   Telstra Pty Ltd
AS701       1368     1157      211   15.4%   UUNET Technologies, Inc. 
AS4151       318      180      138   43.4%   USDA 
AS16473      202       77      125   61.9%   Bell South 
AS7018       807      688      119   14.7%   AT&T 
AS577        297      183      114   38.4%   Bell Advanced Communications Inc.
AS6595       171       61      110   64.3%   DoD Education Activity Network As
AS4293       361      257      104   28.8%   Cable & Wireless USA 
AS705        270      170      100   37.0%   UUNET Technologies, Inc. 
AS2048       215      117       98   45.6%   State of Louisiana 
AS271        157       70       87   55.4%   University of British Columbia 
AS13999      110       23       87   79.1%   Mega Cable S.A. de C.V. 
AS4755       217      134       83   38.2%   Videsh Sanchar Nigam Ltd. Autonom
AS1239       478      404       74   15.5%   Sprint 
AS17557      141       69       72   51.1%   Pakistan Telecom
AS12302      106       36       70   66.0%   MobiFon S.A.
AS6471       132       66       66   50.0%   ENTEL CHILE S.A. 
AS4200       131       66       65   49.6%   Apex Global Information Services,
AS19632       72        7       65   90.3%   Metropolis Intercom S.A. 
AS3464       160       96       64   40.0%   Alabama SuperComputer Network 
AS7046       316      253       63   19.9%   UUNET Technologies, Inc. 
AS4323       296      237       59   19.9%   Time Warner Communications, Inc. 
AS724        200      142       58   29.0%   DLA Systems Automation Center 
AS209        307      250       57   18.6%   Qwest 
AS16758       63        6       57   90.5%   IKON Office Solutions 
AS703        270      218       52   19.3%   UUNET Technologies, Inc. 
AS3908       297      246       51   17.2%   Supernet, Inc. 
AS17561      110       59       51   46.4%   Internet service provision to Wes
AS376        122       73       49   40.2%   Reseau Interordinateurs Scientiqu
AS16814       64       17       47   73.4%   NSS, S.A. 


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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