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The Cidr Report

  • From: Tony Bates
  • Date: Fri Sep 22 15:06:24 2000

This is an auto-generated mail on Fri Sep 22 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      A summary of the last weeks changes in terms of withdrawn and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 22Sep00


0) General Status

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

Date	Prefixes
150900	87093
160900	87265
170900	87208
180900	87379
190900	87348
200900	87707
210900	87719
220900	87996

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 65.33.0.0/16 from AS10994
*** 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 65.160.0.0/15 from AS1239
*** Bogus 65.162.0.0/16 from AS1239
*** Bogus 66.1.16.0/20 from AS3847
*** 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 66.7.0.0/19 from AS16484
*** Bogus 66.7.64.0/19 from AS14618
*** Bogus 66.9.0.0/19 from AS6221
*** Bogus 66.9.16.0/23 from AS16445
*** Bogus 66.10.0.0/20 from AS7132
*** Bogus 66.10.32.0/20 from AS7132
*** Bogus 66.16.0.0/17 from AS14914
*** Bogus 66.18.13.0/24 from AS3549
*** Bogus 66.20.128.0/22 from AS7892
*** Bogus 105.200.37.0/24 from AS9768
*** 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 217.8.128.0/20 from AS15552
*** Bogus 217.8.160.0/20 from AS8246
*** Bogus 217.8.160.0/20 from AS15560
*** Bogus 217.9.32.0/20 from AS15563
*** Bogus 217.9.36.0/22 from AS15563
*** Bogus 217.9.42.0 from AS15563
*** Bogus 217.9.64.0/20 from AS3269
*** Bogus 217.9.96.0/20 from AS15671
*** Bogus 217.9.128.0/20 from AS12969
*** Bogus 217.9.160.0 from AS15606
*** 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 217.10.96.0/20 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 217.11.160.0/20 from AS3259
*** Bogus 217.11.224.0/20 from AS15685
*** Bogus 217.12.0.0/20 from AS15635
*** Bogus 217.12.32.0/20 from AS5378
*** Bogus 217.12.96.0 from AS15632
*** Bogus 217.12.96.0/23 from AS15632
*** Bogus 217.12.97.0 from AS15632
*** Bogus 217.12.192.0/20 from AS15626
*** Bogus 217.12.224.0/20 from AS15438
*** Bogus 217.13.0.0/20 from AS15659
*** 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 217.13.224.0/20 from AS3220
*** 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 217.15.0.0/20 from AS13064
*** Bogus 217.15.128.0/20 from AS13118
*** Bogus 217.16.96.0/20 from AS15687
*** Bogus 217.32.0.0/12 from AS2856
*** Bogus 217.117.117.0 from AS2007
*** Bogus 220.10.56.0 from AS3215

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

Number of ASes in routing system:                 8534

Number of ASes announcing only one prefix:        4865 (2696 cidr, 2169 classful)

Largest number of  cidr routes:                    892 announced by  AS701
Largest number of classful routes:                1087 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 22Sep00 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS271        432      155      277   64.1%   BCnet Backbone
AS9706       310      104      206   66.5%   Pusan Metropolitan City Office of
AS1221       611      451      160   26.2%   TELSTRA-AS
AS9269       179       40      139   77.7%   Hong Kong CTI
AS816        566      429      137   24.2%   UUNET Canada (ASN-UUNETCA-AS4)
AS2609       128        8      120   93.8%   EUnet-TN
AS7657       324      211      113   34.9%   The Internet Group Limited
AS9304       124       17      107   86.3%   Hutchcity
AS7046       376      270      106   28.2%   COQUI-NET PRTC Internet
AS7545       159       56      103   64.8%   TPG Internet Pty Ltd
AS705        367      266      101   27.5%   UNKNOWN
AS6429       209      115       94   45.0%   FirstCom Internet
AS7496       125       34       91   72.8%   Power Up
AS4755       208      118       90   43.3%   Videsh Sanchar Nigam Ltd. India
AS8013       490      403       87   17.8%   UNKNOWN
AS174        536      450       86   16.0%   Performance Systems International
AS6595       138       57       81   58.7%   UNKNOWN
AS3908       256      176       80   31.2%   Supernet, Inc.
AS4293       331      252       79   23.9%   Internal ASN for C&W
AS724        244      168       76   31.1%   UNKNOWN
AS1785       384      309       75   19.5%   AppliedTheory Communications
AS1727       172       97       75   43.6%   UNKNOWN
AS577        250      177       73   29.2%   Bell Backbone
AS7018       581      514       67   11.5%   AT&T WorldNet Service Backbone
AS701       1087     1021       66    6.1%   Alternet
AS4792        77       11       66   85.7%   SK Telecom Co., Ltd.
AS13999       77       11       66   85.7%   UNKNOWN
AS5106        99       36       63   63.6%   UNKNOWN
AS3749       119       57       62   52.1%   UNKNOWN
AS226        170      108       62   36.5%   USC/Information Sciences Institut


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