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The Cidr Report

  • From: Tony Bates
  • Date: Fri Dec 17 15:03:14 1999


This is an auto-generated mail on Fri Dec 17 12:00:00 PST 1999
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      A summary of the last weeks changes in terms of withdrawn and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 17Dec99


0) General Status

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

Date	Prefixes
101299	67903
111299	67955
121299	67842
131299	67917
141299	67952
151299	68032
161299	68301
171299	68465

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


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

*** Bogus 64.4.64.0/19 from AS7398
*** Bogus 64.4.128.0/19 from AS13932
*** Bogus 64.5.0.0/19 from AS14107
*** Bogus 64.5.64.0/19 from AS6601
*** Bogus 64.6.32.0/20 from AS13740
*** Bogus 64.6.64.0/20 from AS10726
*** Bogus 64.6.96.0/20 from AS8049
*** Bogus 64.6.160.0/23 from AS11354
*** Bogus 64.6.160.0/20 from AS11354
*** Bogus 64.6.162.0/24 from AS11354
*** Bogus 64.6.192.0/21 from AS14215
*** Bogus 64.6.204.0/23 from AS14215
*** Bogus 64.6.206.0/23 from AS14215
*** Bogus 64.7.0.0/24 from AS6461
*** Bogus 64.7.2.0/23 from AS3967
*** Bogus 64.7.4.0/23 from AS3967
*** Bogus 64.8.0.0/20 from AS7843
*** Bogus 64.8.24.0/21 from AS7843
*** Bogus 64.9.0.0/19 from AS7843
*** Bogus 64.9.32.0/20 from AS701
*** Bogus 64.9.48.0/20 from AS1239
*** Bogus 64.9.128.0/18 from AS5003
*** Bogus 64.10.0.0/16 from AS816
*** Bogus 64.10.10.0/24 from AS705
*** Bogus 64.14.0.0/19 from AS3967
*** Bogus 64.14.32.0/19 from AS3967
*** Bogus 64.14.64.0/20 from AS3967
*** Bogus 64.14.80.0/20 from AS3967
*** Bogus 64.14.96.0/20 from AS3967
*** Bogus 64.14.112.0/20 from AS3967
*** Bogus 64.14.128.0/20 from AS3967
*** Bogus 219.91.160.0/22 from AS7742
*** Bogus 219.91.164.0/23 from AS7742

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

Number of ASes in routing system:                 6269

Number of ASes announcing only one prefix:        3337 (1827 cidr, 1510 classful)

Largest number of  cidr routes:                    668 announced by  AS701
Largest number of classful routes:                 973 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 17Dec99 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS271        383      141      242   63.2%   BCnet Backbone
AS7046       398      256      142   35.7%   UUNET-CUSTOMER
AS2609       125       11      114   91.2%   EUnet-TN
AS9269       133       20      113   85.0%   Hong Kong CTI
AS1221       635      524      111   17.5%   TELSTRA-AS
AS7657       271      175       96   35.4%   The Internet Group Limited
AS9706       110       15       95   86.4%   Pusan Metropolitan City Office of
AS1653       129       38       91   70.5%   SUNET Swedish University Network
AS4293       238      150       88   37.0%   Internal ASN for C&W
AS174        568      482       86   15.1%   Performance Systems International
AS7496       114       38       76   66.7%   Power Up
AS3749       136       62       74   54.4%   TECNET
AS4449        91       19       72   79.1%   ASN-GALSTAR
AS705        215      145       70   32.6%   ALTERNET-AS
AS4200       172      105       67   39.0%   AGIS (Apex Global Information Ser
AS577        234      173       61   26.1%   Bell Canada Backbone
AS816        249      190       59   23.7%   UUNET Canada (ASN-UUNETCA-AS4)
AS4740       347      289       58   16.7%   Ozemail Pty Ltd (ASN-OZEMAIL)
AS209        341      287       54   15.8%   Qwest Communications
AS684         92       46       46   50.0%   Manitoba Regional Network Backbon
AS9304        64       19       45   70.3%   Hutchcity
AS701        973      932       41    4.2%   Alternet
AS1          520      479       41    7.9%   GTE Internetworking
AS6528        45        7       38   84.4%   WORLD-LYNX
AS7029        77       40       37   48.1%   ALLTELNET
AS8013       130       94       36   27.7%   PSINET-CA
AS4755       105       69       36   34.3%   Videsh Sanchar Nigam Ltd. India
AS11127      114       79       35   30.7%   UNKNOWN
AS3737        98       65       33   33.7%   PenTeleData Inc. (ASN-PTD)
AS549        193      161       32   16.6%   ONet Backbone


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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