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Geoff Huston

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IPv6 CIDR REPORT for 7 Jul 20

Report Sections:


This report is generated from an analysis of the BGP routing table withinAS131072, and was produced at Tue Jul 7 11:45:32 2020 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        30-06-20     90566       54247
        01-07-20     90687       53880
        02-07-20     90864       53916
        03-07-20     90917       53228
        04-07-20     91004       53189
        05-07-20     90978       53203
        06-07-20     91062       53299
        07-07-20     91179       53299

 

AS Summary


         20056  Number of ASes in routing system
         12738  Number of ASes announcing only one prefix
          2350  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.

         --- 07Jul20 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      91184    53310    37874    41.5%   All ASes

        AS11172     2350      105     2245    95.5%   Alestra, S. de R.L. de C.V., MX
        AS12479     1455        4     1451    99.7%   UNI2-AS, ES
        AS45609     1598      256     1342    84.0%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS28573     1243      126     1117    89.9%   CLARO S.A., BR
        AS45271     1098      159      939    85.5%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS22773     1159      296      863    74.5%   ASN-CXA-ALL-CCI-22773-RDC, US
        AS7552       783        4      779    99.5%   VIETEL-AS-AP Viettel Group, VN
        AS32098      740       81      659    89.1%   TRANSTELCO-INC, US
        AS39891      626        9      617    98.6%   ALJAWWALSTC-AS, SA
        AS33363      668       66      602    90.1%   BHN-33363, US
        AS16509     1242      772      470    37.8%   AMAZON-02, US
        AS62240      452       34      418    92.5%   CLOUVIDER Clouvider - Global ASN, GB
        AS30036      559      173      386    69.1%   MEDIACOM-ENTERPRISE-BUSINESS, US
        AS4134       504      154      350    69.4%   CHINANET-BACKBONE No.31,Jin-rong Street, CN
        AS17622      514      165      349    67.9%   CNCGROUP-GZ China Unicom Guangzhou network, CN
        AS38266      564      216      348    61.7%   VODAFONE-IN Vodafone India Ltd., IN
        AS17552      364       22      342    94.0%   TRUE-AS-AP True Internet Co.,Ltd., TH
        AS13142      376       40      336    89.4%   MOBIFONE-AS-VN MOBIFONE Corporation, VN
        AS9829       457      137      320    70.0%   BSNL-NIB National Internet Backbone, IN
        AS8376       429      143      286    66.7%   Jordan Data Communications, JO
        AS3462       267        4      263    98.5%   HINET Data Communication Business Group, TW
        AS20115      351       88      263    74.9%   CHARTER-20115, US
        AS13361      354       92      262    74.0%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS9605       271       14      257    94.8%   DOCOMO NTT DOCOMO, INC., JP
        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
        AS55430      293       40      253    86.3%   STARHUB-NGNBN Starhub Ltd, SG
        AS24158      251        2      249    99.2%   TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
        AS55303      303       67      236    77.9%   EAGLENET-AP 60 Market Square,P.O. Box 364, PH
        AS174        338      116      222    65.7%   COGENT-174, US

        Total      20125     3389    16736    83.2%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            2350 AS11172 Alestra, S. de R.L. de C.V., MX
            1598 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
            1455 AS12479 UNI2-AS, ES
            1243 AS28573 CLARO S.A., BR
            1242 AS16509 AMAZON-02, US
            1159 AS22773 ASN-CXA-ALL-CCI-22773-RDC, US
            1098 AS45271 ICLNET-AS-AP Idea Cellular Limited, IN
             791 AS13335 CLOUDFLARENET, US
             783 AS7552  VIETEL-AS-AP Viettel Group, VN
             774 AS54113 FASTLY, US
             759 AS22394 CELLCO, US
             740 AS32098 TRANSTELCO-INC, US
             668 AS33363 BHN-33363, US
             645 AS20940 AKAMAI-ASN1, EU
             626 AS39891 ALJAWWALSTC-AS, SA
             564 AS38266 VODAFONE-IN Vodafone India Ltd., IN
             559 AS30036 MEDIACOM-ENTERPRISE-BUSINESS, US
             514 AS17622 CNCGROUP-GZ China Unicom Guangzhou network, CN
             504 AS4134  CHINANET-BACKBONE No.31,Jin-rong Street, CN
             483 AS19551 INCAPSULA, US


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.