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Geoff Huston

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IPv6 CIDR REPORT for 14 Dec 17

Report Sections:


This report is generated from an analysis of the BGP routing table within AS2.0 (RouteViews), and was produced at Thu Dec 14 22:15:03 2017 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        07-12-17     48626       32340
        08-12-17     48811       32464
        09-12-17     48915       32603
        10-12-17     48880       32799
        11-12-17     48923       32717
        12-12-17     48974       32613
        13-12-17     49018       32728
        14-12-17     49120       32732

 

AS Summary


         14679  Number of ASes in routing system
          9870  Number of ASes announcing only one prefix
          1248  Largest number of prefixes announced by an AS
                AS22773: ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
      4503711305498624 (/12.00) Largest address span announced by an AS (/64s)
                AS12552: IPO-EU, SE


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.

         --- 14Dec17 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      49283    32903    16380    33.2%   All ASes

        AS22773     1248      150     1098    88.0%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS28573      889      291      598    67.3%   CLARO S.A., BR
        AS32098      485      121      364    75.1%   TRANSTELCO-INC - Transtelco Inc, US
        AS13361      448       84      364    81.2%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS16509      618      328      290    46.9%   AMAZON-02 - Amazon.com, Inc., US
        AS55430      292       23      269    92.1%   STARHUBINTERNET-AS-NGNBN Starhub Internet Pte Ltd, SG
        AS174        599      334      265    44.2%   COGENT-174 - Cogent Communications, US
        AS9605       268        9      259    96.6%   DOCOMO NTT DOCOMO, INC., JP
        AS13206      258        1      257    99.6%   REALMOVE-AS-AP Realmove Company Limited, TH
        AS20277      258       11      247    95.7%   OSP-EU-WEST-001, GB
        AS3651       292       48      244    83.6%   SPRINT-BB6 - Sprint, US
        AS8151       258       24      234    90.7%   Uninet S.A. de C.V., MX
        AS13489      220        9      211    95.9%   EPM Telecomunicaciones S.A. E.S.P., CO
        AS54540      293       97      196    66.9%   INCERO - Incero LLC, US
        AS18403      205       22      183    89.3%   FPT-AS-AP The Corporation for Financing & Promoting Technology, VN
        AS54113      411      237      174    42.3%   FASTLY - Fastly, US
        AS30036      217       47      170    78.3%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS36992      177       32      145    81.9%   ETISALAT-MISR, EG
        AS45609      188       44      144    76.6%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS20057      157       27      130    82.8%   ATT-MOBILITY-LLC-AS20057 - AT&T Mobility LLC, US
        AS22394      437      314      123    28.1%   CELLCO - Cellco Partnership DBA Verizon Wireless, US
        AS45271      133       26      107    80.5%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS10507      125       21      104    83.2%   SPCS - Sprint Personal Communications Systems, US
        AS20013      327      228       99    30.3%   DIGITALOCEAN-ASN-1, US
        AS19551      298      205       93    31.2%   INCAPSULA - Incapsula Inc, US
        AS39607      100        9       91    91.0%   ROOT-NETWORKS - Root Networks, LLC, US
        AS25019      113       31       82    72.6%   SAUDINETSTC-AS, SA
        AS14522       87        9       78    89.7%   Satnet, EC
        AS15133      277      200       77    27.8%   EDGECAST - MCI Communications Services, Inc. d/b/a Verizon Business, US
        AS43766       99       23       76    76.8%   MTC-KSA-AS, SA

        Total       9777     3005     6772    69.3%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description


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.