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Geoff Huston

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IPv6 CIDR REPORT for 23 Oct 20

Report Sections:


This report is generated from an analysis of the BGP routing table withinRouteViews, and was produced at Fri Oct 23 11:05:10 2020 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        16-10-20     99540       58003
        17-10-20     99646       57131
        18-10-20     99567       56187
        19-10-20     99658       56662
        20-10-20     99812       57335
        21-10-20     99941       57873
        22-10-20    100279       57052
        23-10-20    100346       57159

 

AS Summary


         21061  Number of ASes in routing system
         13059  Number of ASes announcing only one prefix
          2632  Largest number of prefixes announced by an AS
                AS11172: Alestra, S. de R.L. de C.V., MX
      36318243520512 (/18.95) Largest address span announced by an AS (/64s)
                AS7922 : COMCAST-7922, US


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.

         --- 23Oct20 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table     100330    57310    43020    42.9%   All ASes

        AS11172     2632      335     2297    87.3%   Alestra, S. de R.L. de C.V., MX
        AS45609     1900      245     1655    87.1%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS12479     1453       17     1436    98.8%   UNI2-AS, ES
        AS22773     1195        8     1187    99.3%   ASN-CXA-ALL-CCI-22773-RDC, US
        AS7552      1152        4     1148    99.7%   VIETEL-AS-AP Viettel Group, VN
        AS45271     1265      175     1090    86.2%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS28573     1175      133     1042    88.7%   CLARO S.A., BR
        AS33363      674       55      619    91.8%   BHN-33363, US
        AS32098      765      209      556    72.7%   TRANSTELCO-INC, US
        AS16509     1436      902      534    37.2%   AMAZON-02, US
        AS62240      554       35      519    93.7%   CLOUVIDER Clouvider - Global ASN, GB
        AS4134       503       31      472    93.8%   CHINANET-BACKBONE No.31,Jin-rong Street, CN
        AS9808       470        5      465    98.9%   CMNET-GD Guangdong Mobile Communication Co.Ltd., CN
        AS39891      773      308      465    60.2%   ALJAWWALSTC-AS, SA
        AS30036      564      122      442    78.4%   MEDIACOM-ENTERPRISE-BUSINESS, US
        AS38266      613      192      421    68.7%   VODAFONE-IN Vodafone India Ltd., IN
        AS13361      558      139      419    75.1%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS17622     1362      981      381    28.0%   CNCGROUP-GZ China Unicom Guangzhou network, CN
        AS13142      386       41      345    89.4%   MOBIFONE-AS-VN MOBIFONE Corporation, VN
        AS17552      381       50      331    86.9%   TRUE-AS-AP True Internet Co.,Ltd., TH
        AS20115      411       86      325    79.1%   CHARTER-20115, US
        AS9829       448      131      317    70.8%   BSNL-NIB National Internet Backbone, IN
        AS55430      297       29      268    90.2%   STARHUB-NGNBN Starhub Ltd, SG
        AS174        699      440      259    37.1%   COGENT-174, US
        AS9605       275       17      258    93.8%   DOCOMO NTT DOCOMO, INC., JP
        AS45899      275       17      258    93.8%   VNPT-AS-VN VNPT Corp, VN
        AS13206      258        1      257    99.6%   REALMOVE-AS-AP Realmove Company Limited, TH
        AS24173      258        3      255    98.8%   NETNAM-AS-AP Netnam Company, VN
        AS55303      301       59      242    80.4%   EAGLENET-AP 60 Market Square,P.O. Box 364, PH
        AS3462       251       22      229    91.2%   HINET Data Communication Business Group, TW

        Total      23284     4792    18492    79.4%   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.