The Cidr Report

Fri Jan 1 20:00:04 UTC 1999

This is an auto-generated mail on Fri Jan  1 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      A summary of the last weeks changes in terms of withdrawn and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 01Jan99

0) General Status

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

Date	Prefixes
251298	54839
261298	54849
271298	54731
281298	54848
291298	54977
301298	55085
311298	55006
010199	55011

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

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

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

Number of ASes in routing system:                 4378

Number of ASes announcing only one prefix:        2165 (1152 cidr, 1013 classful)

Largest number of  cidr routes:                    351 announced by AS3561
Largest number of classful routes:                1008 announced by  AS701

1) Gains by aggregating at the origin AS level

 --- 01Jan99 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS271        392      146      246   62.8%   BCnet Backbone
AS3749       228       75      153   67.1%   TECNET
AS2493       327      180      147   45.0%   iSTAR Internet, Inc.
AS701       1008      864      144   14.3%   Alternet
AS1785       541      403      138   25.5%   NYSERNet Backbone
AS174        671      548      123   18.3%   Performance Systems International
AS5668       132       36       96   72.7%   Century Telephone Inc.
AS4200       190       97       93   48.9%   AGIS (Apex Global Information Ser
AS4755       148       66       82   55.4%   Videsh Sanchar Nigam Ltd. India
AS1267       107       29       78   72.9%   IUNET-AS
AS4293       208      136       72   34.6%   IMCI
AS549        220      154       66   30.0%   ONet Backbone
AS4740       382      321       61   16.0%   Ozemail Pty Ltd (ASN-OZEMAIL)
AS8517       129       72       57   44.2%   UNKNOWN
AS1221       378      321       57   15.1%   AARNET-AS
AS7046       248      192       56   22.6%   UUNET-CUSTOMER
AS7545       115       65       50   43.5%   TPG Internet Pty Ltd
AS1239       533      484       49    9.2%   SprintLink Backbone
AS10928       93       44       49   52.7%   UNKNOWN
AS72          88       40       48   54.5%   Schlumberger Information Network
AS7657       138       93       45   32.6%   The Internet Group Limited
AS7496        73       28       45   61.6%   Power Up
AS577        208      163       45   21.6%   Bell Canada Backbone
AS852        174      132       42   24.1%   AGT Advance Communication
AS719        450      408       42    9.3%   LANLINK-AS
AS3221        84       42       42   50.0%   RIPE-ASNBLOCK4
AS803         71       35       36   50.7%   SaskNet Backbone
AS7122       109       75       34   31.2%   MTS ADVANCED Network Policy
AS6897        46       14       32   69.6%   RIPE-ASNBLOCK6
AS6332       100       69       31   31.0%   TELNOR

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