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Geoff Huston

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IPv6 CIDR REPORT for 24 Mar 19

Report Sections:


This report is generated from an analysis of the BGP routing table withinRouteViews, and was produced at Sun Mar 24 19:15:12 2019 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        17-03-19     68373       40439
        18-03-19     68353       40601
        19-03-19     68447       40783
        20-03-19     68522       40912
        21-03-19     68645       41146
        22-03-19     68732       41301
        23-03-19     68789       41273
        24-03-19     68746       41316

 

AS Summary


         16990  Number of ASes in routing system
         10969  Number of ASes announcing only one prefix
          1453  Largest number of prefixes announced by an AS
                AS12479: UNI2-AS, ES
      288230625806909440 (/6.00) 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.

         --- 24Mar19 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      68816    42592    26224    38.1%   All ASes

        AS12479     1453      266     1187    81.7%   UNI2-AS, ES
        AS28573     1047      218      829    79.2%   CLARO S.A., BR
        AS22773      989      213      776    78.5%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS33363      657       48      609    92.7%   BHN-33363 - Charter Communications, Inc, US
        AS45609      711      145      566    79.6%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS30036      728      165      563    77.3%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS7552       684      223      461    67.4%   VIETEL-AS-AP Viettel Group, VN
        AS45271      562      134      428    76.2%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS11172      702      276      426    60.7%   Alestra, S. de R.L. de C.V., MX
        AS17622      493       95      398    80.7%   CNCGROUP-GZ China Unicom Guangzhou network, CN
        AS16509      775      404      371    47.9%   AMAZON-02 - Amazon.com, Inc., US
        AS174        702      333      369    52.6%   COGENT-174 - Cogent Communications, US
        AS9829       449       99      350    78.0%   BSNL-NIB National Internet Backbone, IN
        AS13142      337       13      324    96.1%   MOBIFONE-AS-VN MOBIFONE Corporation, VN
        AS13361      532      222      310    58.3%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS9808       345       55      290    84.1%   CMNET-GD Guangdong Mobile Communication Co.Ltd., CN
        AS32098      644      375      269    41.8%   TRANSTELCO-INC - Transtelco Inc, US
        AS3462       285       23      262    91.9%   HINET Data Communication Business Group, TW
        AS9605       272       13      259    95.2%   DOCOMO NTT DOCOMO, INC., JP
        AS24173      258        1      257    99.6%   NETNAM-AS-AP Netnam Company, VN
        AS13206      258        1      257    99.6%   REALMOVE-AS-AP Realmove Company Limited, TH
        AS55430      292       39      253    86.6%   STARHUB-NGNBN Starhub Ltd, SG
        AS4808       229       23      206    90.0%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS54540      304      109      195    64.1%   INCERO-HVVC - HIVELOCITY, Inc., US
        AS54113      575      389      186    32.3%   FASTLY - Fastly, US
        AS3651       209       34      175    83.7%   SPRINT-BB6 - Sprint, US
        AS21003      182       13      169    92.9%   PINKU-DAIMARI Pinku Daimari | CHD-IX, GB
        AS22394      612      453      159    26.0%   CELLCO - Cellco Partnership DBA Verizon Wireless, US
        AS17552      180       23      157    87.2%   TRUE-AS-AP True Internet Co.,Ltd., TH
        AS7497       163        7      156    95.7%   CSTNET-AS-AP Computer Network Information Center, CN

        Total      15629     4412    11217    71.8%   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.