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Geoff Huston

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IPv6 CIDR REPORT for 17 Nov 18

Report Sections:


This report is generated from an analysis of the BGP routing table within AS6447 (RouteViews), and was produced at Sat Nov 17 19:20:53 2018 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        10-11-18     63434       38276
        11-11-18     63407       37883
        12-11-18     63603       38033
        13-11-18     63722       38352
        14-11-18     63806       37680
        15-11-18     63879       38327
        16-11-18     63817       38545
        17-11-18     64071       38461

 

AS Summary


         16311  Number of ASes in routing system
         10627  Number of ASes announcing only one prefix
          1955  Largest number of prefixes announced by an AS
                AS45609: BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
      288230625806450688 (/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.

         --- 17Nov18 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      64206    38196    26010    40.5%   All ASes

        AS45609     1955      244     1711    87.5%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS12479     1229        8     1221    99.3%   UNI2-AS, ES
        AS22773      988       11      977    98.9%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS28573      991      126      865    87.3%   CLARO S.A., BR
        AS33363      650       54      596    91.7%   BHN-TAMPA - BRIGHT HOUSE NETWORKS, LLC, US
        AS7552       588        2      586    99.7%   VIETEL-AS-AP Viettel Group, VN
        AS30036      690      193      497    72.0%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS11172      515       31      484    94.0%   Alestra, S. de R.L. de C.V., MX
        AS45271      482       81      401    83.2%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS16509      746      365      381    51.1%   AMAZON-02 - Amazon.com, Inc., US
        AS174        663      306      357    53.8%   COGENT-174 - Cogent Communications, US
        AS9808       323       10      313    96.9%   CMNET-GD Guangdong Mobile Communication Co.Ltd., CN
        AS13361      532      222      310    58.3%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS32098      631      332      299    47.4%   TRANSTELCO-INC - Transtelco Inc, US
        AS9605       272       13      259    95.2%   DOCOMO NTT DOCOMO, INC., JP
        AS55430      289       30      259    89.6%   STARHUB-NGNBN Starhub Ltd, SG
        AS13206      258        1      257    99.6%   REALMOVE-AS-AP Realmove Company Limited, TH
        AS13142      262       17      245    93.5%   MOBIFONE-AS-VN MOBIFONE Corporation, VN
        AS19551      368      155      213    57.9%   INCAPSULA - Incapsula Inc, US
        AS18403      214        5      209    97.7%   FPT-AS-AP The Corporation for Financing & Promoting Technology, VN
        AS54113      543      337      206    37.9%   FASTLY - Fastly, US
        AS4808       218       18      200    91.7%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS54540      303      108      195    64.4%   INCERO - Incero LLC, US
        AS17622      349      160      189    54.2%   CNCGROUP-GZ China Unicom Guangzhou network, CN
        AS3651       221       36      185    83.7%   SPRINT-BB6 - Sprint, US
        AS8151       226       57      169    74.8%   Uninet S.A. de C.V., MX
        AS10507      201       32      169    84.1%   SPCS - Sprint Personal Communications Systems, US
        AS17621      171       13      158    92.4%   CNCGROUP-SH China Unicom Shanghai network, CN
        AS22394      526      379      147    27.9%   CELLCO - Cellco Partnership DBA Verizon Wireless, US
        AS38266      198       59      139    70.2%   VODAFONE-IN Vodafone India Ltd., IN

        Total      15602     3405    12197    78.2%   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.