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Geoff Huston

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IPv6 CIDR REPORT for 25 Aug 19

Report Sections:


This report is generated from an analysis of the BGP routing table withinRouteViews, and was produced at Sun Aug 25 22:20:39 2019 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        18-08-19     76685       45776
        19-08-19     76791       45725
        20-08-19     76618       45159
        21-08-19     76757       45304
        22-08-19     76898       44232
        23-08-19     76861       44644
        24-08-19     76987       44896
        25-08-19     76944       44896

 

AS Summary


         17928  Number of ASes in routing system
         11401  Number of ASes announcing only one prefix
          1274  Largest number of prefixes announced by an AS
                AS11172: Alestra, S. de R.L. de C.V., MX
      288230634396975104 (/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.

         --- 25Aug19 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      76982    44948    32034    41.6%   All ASes

        AS12479     1267       96     1171    92.4%   UNI2-AS, ES
        AS11172     1274      145     1129    88.6%   Alestra, S. de R.L. de C.V., MX
        AS22773      989       27      962    97.3%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS45609      935      117      818    87.5%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS30036      915      160      755    82.5%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS32098      697        6      691    99.1%   TRANSTELCO-INC - Transtelco Inc, US
        AS28573     1235      546      689    55.8%   CLARO S.A., BR
        AS8376      1240      566      674    54.4%   , JO
        AS7552       675       11      664    98.4%   VIETEL-AS-AP Viettel Group, VN
        AS33363      676       51      625    92.5%   BHN-33363 - Charter Communications, Inc, US
        AS45271      700      126      574    82.0%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS4134       502       30      472    94.0%   CHINANET-BACKBONE No.31,Jin-rong Street, CN
        AS16509     1132      713      419    37.0%   AMAZON-02 - Amazon.com, Inc., US
        AS17622      495       95      400    80.8%   CNCGROUP-GZ China Unicom Guangzhou network, CN
        AS13361      679      300      379    55.8%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS174        718      359      359    50.0%   COGENT-174 - Cogent Communications, US
        AS9829       452      111      341    75.4%   BSNL-NIB National Internet Backbone, IN
        AS9808       357       31      326    91.3%   CMNET-GD Guangdong Mobile Communication Co.Ltd., CN
        AS13142      341       16      325    95.3%   MOBIFONE-AS-VN MOBIFONE Corporation, VN
        AS3462       288       26      262    91.0%   HINET Data Communication Business Group, TW
        AS9605       272       13      259    95.2%   DOCOMO NTT DOCOMO, INC., JP
        AS13206      258        1      257    99.6%   REALMOVE-AS-AP Realmove Company Limited, TH
        AS24173      258        2      256    99.2%   NETNAM-AS-AP Netnam Company, VN
        AS8151       294       82      212    72.1%   Uninet S.A. de C.V., MX
        AS4808       232       26      206    88.8%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS18403      214        8      206    96.3%   FPT-AS-AP The Corporation for Financing & Promoting Technology, VN
        AS54113      640      440      200    31.2%   FASTLY - Fastly, US
        AS22394      721      526      195    27.0%   CELLCO - Cellco Partnership DBA Verizon Wireless, US
        AS17621      185       12      173    93.5%   CNCGROUP-SH China Unicom Shanghai network, CN
        AS55430      300      127      173    57.7%   STARHUB-NGNBN Starhub Ltd, SG

        Total      18941     4769    14172    74.8%   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.