The Cidr Report

[Tony Bates <tbates () cisco com>]

This is an auto-generated mail on Fri Aug  4 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      A summary of the last weeks changes in terms of withdrawn and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 04Aug00


0) General Status

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

Date    Prefixes
280700  82898
290700  83084
300700  83013
310700  83117
010800  83063
020800  83127
030800  83303
040800  83610

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 217.8.32.0/20 from AS3220

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

Number of ASes in routing system:                 8086

Number of ASes announcing only one prefix:        4539 (2516 cidr, 2023 classful)

Largest number of  cidr routes:                    929 announced by  AS701
Largest number of classful routes:                1086 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 04Aug00 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS271        435      154      281   64.6%   BCnet Backbone
AS7046       559      368      191   34.2%   COQUI-NET PRTC Internet
AS1221       587      433      154   26.2%   TELSTRA-AS
AS9706       153       30      123   80.4%   Pusan Metropolitan City Office of
AS2609       128        8      120   93.8%   EUnet-TN
AS9304       125       16      109   87.2%   Hutchcity
AS7657       300      192      108   36.0%   The Internet Group Limited
AS9269       158       57      101   63.9%   Hong Kong CTI
AS7545       157       58       99   63.1%   TPG Internet Pty Ltd
AS6429       208      114       94   45.2%   FirstCom Internet
AS7496       126       38       88   69.8%   Power Up
AS174        553      467       86   15.6%   Performance Systems International
AS577        258      173       85   32.9%   Bell Backbone
AS4293       340      255       85   25.0%   Internal ASN for C&W
AS705        325      250       75   23.1%   ALTERNET-AS
AS724        214      146       68   31.8%   DLA-ASNBLOCK-AS
AS1727       158       90       68   43.0%   MRMS-WEST
AS6595       118       52       66   55.9%   DODDSEUR
AS3908       238      172       66   27.7%   Supernet, Inc.
AS701       1086     1022       64    5.9%   Alternet
AS4755       160       97       63   39.4%   Videsh Sanchar Nigam Ltd. India
AS7018       554      492       62   11.2%   AT&T WorldNet Service Backbone
AS5106        98       36       62   63.3%   AADS-COLUMBUS
AS816        335      275       60   17.9%   UUNET Canada (ASN-UUNETCA-AS4)
AS3749       120       61       59   49.2%   TECNET
AS7568        85       27       58   68.2%   C.S. Communications Co., Ltd.
AS3602       300      242       58   19.3%   Sprint Canada Inc.
AS4740       323      270       53   16.4%   Ozemail Pty Ltd (ASN-OZEMAIL)
AS11252       90       37       53   58.9%   Idaho State University
AS16758       62       10       52   83.9%   UNKNOWN


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