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Geoff Huston

Comments to: cidr-reports@potaroo.net



IPv6 CIDR REPORT for 7 Jul 08

Report Sections:


This report is generated from an analysis of the BGP routing table within AS2.0 (Route-Views), and was produced at Mon Jul 7 04:19:04 2008 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        30-06-08      1261        1189
        01-07-08      1275        1225
        02-07-08      1275        1236
        03-07-08      1276        1236
        04-07-08      1272        1239
        05-07-08      1277        1242
        06-07-08      1272        1241
        07-07-08      1281        1241

 

AS Summary


          1003  Number of ASes in routing system
           837  Number of ASes announcing only one prefix
            41  Largest number of prefixes announced by an AS
                AS33   : HP-DIGITAL-33 - Hewlett-Packard Company
      35188667056128 (/19.00) Largest address span announced by an AS (/64s)
                AS5511 : OPENTRANSIT France Telecom - Orange


Aggregation Summary


The algorithm used in this report proposes aggregation only when there is a precise match using AS path so as to preserve traffic transit policies.

         --- 07Jul08 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table       1281     1241       40     3.1%   All ASes

        AS33          41       31       10    24.4%   HP-DIGITAL-33 - Hewlett-Packard Company
        AS1237        29       26        3    10.3%   KREONET-AS-KR Korea Institute of Science and Technology Information
        AS101          4        1        3    75.0%   WASH-NSF-AS - University of Washington
        AS8368         4        1        3    75.0%   BENESOL-BACKBONE Belgian Network Solutions B.V.B.A
        AS2042         3        1        2    66.7%   
        AS6083         3        1        2    66.7%   POSIX-AFRICA
        AS109          2        1        1    50.0%   CISCO-EU-109 Cisco Systems Global ASN - ARIN Assigned
        AS2914        14       13        1     7.1%   NTT-COMMUNICATIONS-2914 - NTT America, Inc.
        AS2514         2        1        1    50.0%   INFOSPHERE NTT PC Communications, Inc.
        AS2576         3        2        1    33.3%   DOT-AS - U. S. Department of Transportation
        AS3790         3        2        1    33.3%   RADIGRAFICA COSTARRICENSE
        AS7908         4        3        1    25.0%   Comsat Argentina S.A.
        AS9316         4        3        1    25.0%   DACOM-PUBNETPLUS-AS-KR DACOM PUBNETPLUS
        AS10886        2        1        1    50.0%   MAX-GIGAPOP - University of Maryland
        AS13301        3        2        1    33.3%   UNITEDCOLO-AS Autonomous System of unitedcolo.de
        AS17709        3        2        1    33.3%   EBT Eastern Broadband Telecom Co.,Ltd
        AS17741        2        1        1    50.0%   MEDOBJ01-AS-AP Service infrastructure of
        AS18061        3        2        1    33.3%   WORLDCOM-INDIA WorldCom Communications India
        AS20707        2        1        1    50.0%   AS20707 IHnet Srl
        AS24489        2        1        1    50.0%   TEIN2-NORTH-AP Trans-Eurasia Information Network (TEIN2) - North
        AS24136        2        1        1    50.0%   CNNIC-AP China Internet Network Information Center
        AS24867        3        2        1    33.3%   ADAPT-AS Adapt Services Ltd
        AS30071        7        6        1    14.3%   ASN-TBONE - TowardEX Technologies International, Inc.

        Total        145      105       40    27.6%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
              41 AS33    HP-DIGITAL-33 - Hewlett-Packard Company
              29 AS1237  KREONET-AS-KR Korea Institute of Science and Technology Information
              24 AS12041 AFILIAS-NST Afilias Limited
              14 AS2914  NTT-COMMUNICATIONS-2914 - NTT America, Inc.
              11 AS12654 RIPE-NCC-RIS-AS RIPE NCC RIS project
              10 AS6175  SPRINTLINK9 - Sprint
               8 AS7575  AARNET-AS-AP Australian Academic and Reasearch Network (AARNet)
               7 AS30071 ASN-TBONE - TowardEX Technologies International, Inc.
               6 AS3549  GBLX Global Crossing Ltd.
               5 AS23456 -Reserved AS-
               5 AS26415 VERISIGN-INC Verisign
               5 AS40009 BITGRAVITY - BitGravity, Inc.
               4 AS1880  Stupi, house man's policy
               4 AS101   WASH-NSF-AS - University of Washington
               4 AS1280  ISC-AS1280 Internet Systems Consortium, Inc.
               4 AS6453  GLOBEINTERNET TATA Communications
               4 AS7908  Comsat Argentina S.A.
               4 AS8368  BENESOL-BACKBONE Belgian Network Solutions B.V.B.A
               4 AS8881  VERSATEL Versatel Deutschland
               4 AS9316  DACOM-PUBNETPLUS-AS-KR DACOM PUBNETPLUS


Last Week's Changes


This a daily snapshot of changes in routes being withdrawn and added. The deltas are calculated over a rolling 7 day period. Please bear in mind this is purely a "snapshot" and a large flucuation could be caused by a connectivity problem, for example.