The Cidr Report

Fri May 8 19:00:02 UTC 1998

This is an auto-generated mail on Fri May  8 12:00:00 PDT 1998
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      A summary of the last weeks changes in terms of withdrawn and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 08May98

0) General Status

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

Date	Prefixes
010598	51507
020598	51483
030598	51464
040598	51619
050598	51640
060598	51724
070598	51403
080598	51559

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

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

*** Bogus 222.222.222.0 from AS701

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

Number of ASes in routing system:                 3529

Number of ASes announcing only one prefix:        1666 (868 cidr, 798 classful)

Largest number of  cidr routes:                    378 announced by AS3561
Largest number of classful routes:                1105 announced by  AS701

1) Gains by aggregating at the origin AS level

 --- 08May98 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS2493       611      376      235   38.5%   iSTAR Internet, Inc.
AS816        691      464      227   32.9%   UUNET Canada (ASN-UUNETCA-AS4)
AS4293       452      228      224   49.6%   IMCI
AS174        826      633      193   23.4%   Performance Systems International
AS701       1105      924      181   16.4%   Alternet
AS3602       482      309      173   35.9%   Sprint Canada Inc.
AS3749       207       65      142   68.6%   TECNET
AS8505       156       30      126   80.8%   Middle East Technical University 
AS5668       116       46       70   60.3%   Century Telephone Inc.
AS2048       161       91       70   43.5%   LaNet
AS3221       110       41       69   62.7%   EENet Autonomous System
AS4755        94       27       67   71.3%   Videsh Sanchar Nigam Ltd. India
AS10928      108       42       66   61.1%   UNKNOWN
AS1221       310      247       63   20.3%   AARNET-AS
AS3804       200      142       58   29.0%   Bell Solutions
AS1239       554      499       55    9.9%   SprintLink Backbone
AS549        210      156       54   25.7%   ONet Backbone
AS7046       184      132       52   28.3%   UUNET-CUSTOMER
AS271        101       50       51   50.5%   BCnet Backbone
AS72          84       36       48   57.1%   Schlumberger Information Network
AS4763       123       76       47   38.2%   Telstra New Zealand
AS7545       101       60       41   40.6%   TPG Internet Pty Ltd
AS852        157      117       40   25.5%   AGT Advance Communication
AS684         94       55       39   41.5%   Manitoba Regional Network Backbon
AS4740       372      333       39   10.5%   ASN-OZEMAIL (Ozemail Pty Ltd)
AS762        118       80       38   32.2%   WELLFLEET-AS
AS4200       124       86       38   30.6%   AGIS (Apex Global Information Ser
AS3493       163      125       38   23.3%   INTERLINK
AS6392        69       32       37   53.6%   MidWest Communications, Inc.
AS6181        65       28       37   56.9%   FUSE-NET

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