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Geoff Huston

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IPv6 CIDR REPORT for 20 Feb 20

Report Sections:


This report is generated from an analysis of the BGP routing table withinRouteViews, and was produced at Thu Feb 20 05:24:15 2020 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        13-02-20     82374       47729
        14-02-20     82507       47594
        15-02-20     83005       47663
        16-02-20     82987       47745
        17-02-20     83119       47080
        18-02-20     83094       47564
        19-02-20     83028       47487
        20-02-20     83044       47539

 

AS Summary


         19124  Number of ASes in routing system
         12123  Number of ASes announcing only one prefix
          1900  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.

         --- 20Feb20 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      83062    47564    35498    42.7%   All ASes

        AS11172     1900       99     1801    94.8%   Alestra, S. de R.L. de C.V., MX
        AS12479     1408      148     1260    89.5%   UNI2-AS, ES
        AS45609     1351      214     1137    84.2%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS22773     1002       12      990    98.8%   ASN-CXA-ALL-CCI-22773-RDC, US
        AS28573     1276      329      947    74.2%   CLARO S.A., BR
        AS45271     1052      147      905    86.0%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS7552       736        3      733    99.6%   VIETEL-AS-AP Viettel Group, VN
        AS32098      732        3      729    99.6%   TRANSTELCO-INC, US
        AS33363      662       47      615    92.9%   BHN-33363, US
        AS39891      495       18      477    96.4%   ALJAWWALSTC-AS, SA
        AS16509     1233      794      439    35.6%   AMAZON-02, US
        AS4134       502       65      437    87.1%   CHINANET-BACKBONE No.31,Jin-rong Street, CN
        AS17622      498       97      401    80.5%   CNCGROUP-GZ China Unicom Guangzhou network, CN
        AS30036      549      168      381    69.4%   MEDIACOM-ENTERPRISE-BUSINESS, US
        AS9808       375       26      349    93.1%   CMNET-GD Guangdong Mobile Communication Co.Ltd., CN
        AS13142      365       23      342    93.7%   MOBIFONE-AS-VN MOBIFONE Corporation, VN
        AS8376       509      204      305    59.9%   Jordan Data Communications, JO
        AS174        607      332      275    45.3%   COGENT-174, US
        AS13361      306       33      273    89.2%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS17552      316       50      266    84.2%   TRUE-AS-AP True Internet Co.,Ltd., TH
        AS9829       470      205      265    56.4%   BSNL-NIB National Internet Backbone, IN
        AS3462       288       25      263    91.3%   HINET Data Communication Business Group, TW
        AS9605       271       13      258    95.2%   DOCOMO NTT DOCOMO, INC., JP
        AS55430      302       45      257    85.1%   STARHUB-NGNBN Starhub Ltd, SG
        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
        AS38266      381      136      245    64.3%   VODAFONE-IN Vodafone India Ltd., IN
        AS24158      240        3      237    98.8%   TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
        AS4808       234       26      208    88.9%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS22394      723      520      203    28.1%   CELLCO, US

        Total      19299     3789    15510    80.4%   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.