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The Cidr Report

  • From: Tony Bates
  • Date: Fri Sep 08 15:09:11 2000

This is an auto-generated mail on Fri Sep  8 12:00:00 PDT 2000
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      A summary of the last weeks changes in terms of withdrawn and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 08Sep00


0) General Status

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

Date	Prefixes
010900	85543
020900	85631
030900	85544
040900	85623
050900	85693
060900	85755
070900	85753
080900	85860

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


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

*** Bogus 65.0.0.0/14 from AS6172
*** Bogus 65.128.0.0/14 from AS209
*** Bogus 65.132.0.0/15 from AS209
*** Bogus 65.134.0.0/17 from AS209
*** Bogus 65.134.128.0/19 from AS209
*** Bogus 65.228.9.0/24 from AS577
*** Bogus 66.4.0.0/17 from AS11686
*** Bogus 66.4.0.0/15 from AS11686
*** Bogus 66.4.128.0/17 from AS11686
*** Bogus 66.6.32.0/20 from AS701
*** Bogus 66.6.64.0/20 from AS14480
*** Bogus 66.6.96.0/20 from AS10970
*** Bogus 66.6.128.0/20 from AS3561
*** Bogus 66.6.192.0/20 from AS11282
*** Bogus 217.0.0.0/13 from AS3320
*** Bogus 217.8.0.0/20 from AS1299
*** Bogus 217.8.32.0/20 from AS3220
*** Bogus 217.8.160.0/20 from AS8246
*** Bogus 217.9.32.0/20 from AS2686
*** Bogus 217.9.96.0/20 from AS12658
*** Bogus 217.9.128.0/20 from AS12969
*** Bogus 217.9.224.0/20 from AS13124
*** Bogus 217.10.0.0/20 from AS1270
*** Bogus 217.10.64.0/20 from AS15594
*** Bogus 217.10.96.0/20 from AS5556
*** Bogus 217.10.128.0/20 from AS5378
*** Bogus 217.10.160.0/23 from AS15641
*** Bogus 217.10.162.0 from AS15641
*** Bogus 217.10.192.0 from AS12302
*** Bogus 217.11.0.0/20 from AS9034
*** Bogus 217.11.64.0/20 from AS702
*** Bogus 217.12.192.0/20 from AS15626
*** Bogus 217.13.32.0 from AS15629
*** Bogus 217.13.33.0 from AS15629
*** Bogus 217.13.34.0 from AS15629
*** Bogus 217.13.192.0/20 from AS9126
*** Bogus 217.14.64.0/20 from AS3303
*** Bogus 217.14.96.0/23 from AS13099
*** Bogus 217.14.128.0/20 from AS8851
*** Bogus 217.14.192.0/20 from AS3226
*** Bogus 217.117.117.0 from AS2007
*** Bogus 220.10.56.0 from AS3215

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

Number of ASes in routing system:                 8399

Number of ASes announcing only one prefix:        4770 (2647 cidr, 2123 classful)

Largest number of  cidr routes:                    902 announced by  AS701
Largest number of classful routes:                1058 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 08Sep00 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS271        425      150      275   64.7%   BCnet Backbone
AS1221       618      453      165   26.7%   TELSTRA-AS
AS9706       198       52      146   73.7%   Pusan Metropolitan City Office of
AS9269       174       44      130   74.7%   Hong Kong CTI
AS2609       128        8      120   93.8%   EUnet-TN
AS7657       318      206      112   35.2%   The Internet Group Limited
AS1785       466      357      109   23.4%   AppliedTheory Communications
AS816        506      400      106   20.9%   UUNET Canada (ASN-UUNETCA-AS4)
AS7046       370      264      106   28.6%   COQUI-NET PRTC Internet
AS7545       158       55      103   65.2%   TPG Internet Pty Ltd
AS9304       117       21       96   82.1%   Hutchcity
AS7496       126       35       91   72.2%   Power Up
AS4293       339      251       88   26.0%   Internal ASN for C&W
AS6429       200      114       86   43.0%   FirstCom Internet
AS4755       194      111       83   42.8%   Videsh Sanchar Nigam Ltd. India
AS174        533      450       83   15.6%   Performance Systems International
AS705        329      249       80   24.3%   ALTERNET-AS
AS6595       133       56       77   57.9%   DODDSEUR
AS3908       253      176       77   30.4%   Supernet, Inc.
AS577        251      178       73   29.1%   Bell Backbone
AS724        217      149       68   31.3%   DLA-ASNBLOCK-AS
AS7018       575      507       68   11.8%   AT&T WorldNet Service Backbone
AS4792        77       11       66   85.7%   SK Telecom Co., Ltd.
AS1727       151       86       65   43.0%   MRMS-WEST
AS5106       101       37       64   63.4%   AADS-COLUMBUS
AS3749       122       60       62   50.8%   TECNET
AS3602       297      239       58   19.5%   Sprint Canada Inc.
AS701       1058     1002       56    5.3%   Alternet
AS5102        75       21       54   72.0%   AADS-CHAMPAIGN
AS376        123       69       54   43.9%   RISQ


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