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Geoff Huston

Comments to: cidr-reports@potaroo.net


IPv6 CIDR REPORT for 4 Feb 12

Report Sections:

This report is generated from an analysis of the BGP routing table within AS2.0 (Route-Views), and was produced at Sat Feb 4 02:17:15 2012 AEST.

Status Summary

Table History


        Date      Prefixes    CIDR Agg
        28-01-12      7819        6731
        29-01-12      7829        6725
        30-01-12      7901        6700
        31-01-12      7901        6712
        01-02-12      7908        6747
        02-02-12      7913        6750
        03-02-12      7898        6727
        04-02-12      7908        6754

 

AS Summary


          5120  Number of ASes in routing system
          4060  Number of ASes announcing only one prefix
            97  Largest number of prefixes announced by an AS
                AS20940: AKAMAI-ASN1 Akamai Technologies European AS
      35188667121664 (/19.00) Largest address span announced by an AS (/64s)
                AS5511 : OPENTRANSIT France Telecom S.A.

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. 

         --- 04Feb12 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table       7909     6756     1153    14.6%   All ASes

        AS17451       37        1       36    97.3%   BIZNET-AS-AP BIZNET ISP
        AS12883       34        1       33    97.1%   UCOMLINE PRIVATE JOINT-STOCK COMPANY "FARLEP-INVEST"
        AS703         34       10       24    70.6%   UUNET - MCI Communications Services, Inc. d/b/a Verizon Business
        AS12041       38       17       21    55.3%   AFILIAS-NST Afilias Limited
        AS7303        21        2       19    90.5%   Telecom Argentina S.A.
        AS17832       30       11       19    63.3%   SIXNGIX-AS-KR Korea Internet Security Agency
        AS33517       27        9       18    66.7%   DYNDNS - Dynamic Network Services, Inc.
        AS42          28       12       16    57.1%   PCH PCH
        AS6830        24        8       16    66.7%   UPC UPC Broadband
        AS9121        17        1       16    94.1%   TTNET Turk Telekomunikasyon Anonim Sirketi
        AS71          17        2       15    88.2%   HP-INTERNET-AS Hewlett-Packard Company
        AS19916       16        1       15    93.8%   ASTRUM-0001 - OLM, LLC
        AS30688       17        2       15    88.2%   FASTTRACK-NET-AS - FastTrack Communications Inc.
        AS23951       13        1       12    92.3%   CITRA-AS-ID PT JEMBATAN CITRA NUSANTARA
        AS2576        25       14       11    44.0%   DOT-AS - U. S. Department of Transportation
        AS13768       20        9       11    55.0%   PEER1 - Peer 1 Network Inc.
        AS19271       13        2       11    84.6%   PEAK10 - Peak 10
        AS25973       14        3       11    78.6%   GTT Global Telecom & Technology ASN
        AS31985       12        1       11    91.7%   KCNAP-PRI-ASN - KC NAP, LLC
        AS40009       12        1       11    91.7%   BITGRAVITY - BitGravity, Inc.
        AS23756       11        1       10    90.9%   PADINET-AS-ID PADINET - Padi Internet
        AS31793       12        2       10    83.3%   BROADSTAR - Primecast
        AS6402        10        1        9    90.0%   NFRAME - nFrame
        AS8781        10        1        9    90.0%   QA-ISP Qatar Telecom (Qtel) Q.S.C.
        AS20940       97       88        9     9.3%   AKAMAI-ASN1 Akamai Technologies European AS
        AS29049       10        1        9    90.0%   DELTA-TELECOM-AS Delta Telecom LTD.
        AS36351       12        3        9    75.0%   SOFTLAYER - SoftLayer Technologies Inc.
        AS37944       21       12        9    42.9%   CNNIC-CSTNET-AP CHINA SCIENCE AND TECHNOLOGY NETWORK
        AS38148       10        1        9    90.0%   QIANDRA-AS-ID QIANDRA INFORMATION TECHNOLOGY PT
        AS3491        10        2        8    80.0%   BTN-ASN - Beyond The Network America, Inc.

        Total        652      220      432    66.3%   Top 30 total




        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
              97 AS20940 AKAMAI-ASN1 Akamai Technologies European AS
              40 AS22394 CELLCO - Cellco Partnership DBA Verizon Wireless
              38 AS12041 AFILIAS-NST Afilias Limited
              37 AS17451 BIZNET-AS-AP BIZNET ISP
              34 AS703   UUNET - MCI Communications Services, Inc. d/b/a Verizon Business
              34 AS12883 UCOMLINE PRIVATE JOINT-STOCK COMPANY "FARLEP-INVEST"
              32 AS1237  KREONET-AS-KR Korea Institute of Science and Technology Information
              30 AS17832 SIXNGIX-AS-KR Korea Internet Security Agency
              28 AS42    PCH PCH
              28 AS12008 ULTRADNS - Centergate Research, LLC.
              28 AS35994 AKAMAI-AS - Akamai Technologies, Inc.
              27 AS33517 DYNDNS - Dynamic Network Services, Inc.
              25 AS2576  DOT-AS - U. S. Department of Transportation
              24 AS6830  UPC UPC Broadband
              23 AS15395 UK Rackspace
              21 AS702   AS702 Verizon Business EMEA - Commercial IP service provider in Europe
              21 AS7303  Telecom Argentina S.A.
              21 AS12654 RIPE-NCC-RIS-AS RIPE Network Coordination Center
              21 AS37944 CNNIC-CSTNET-AP CHINA SCIENCE AND TECHNOLOGY NETWORK
              20 AS13768 PEER1 - Peer 1 Network Inc.

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.