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Geoff Huston

Comments to: cidr-reports@potaroo.net



IPv6 CIDR REPORT for 22 May 19

Report Sections:


This report is generated from an analysis of the BGP routing table withinRouteViews, and was produced at Wed May 22 15:15:14 2019 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        15-05-19     72149       43285
        16-05-19     72098       43243
        17-05-19     72129       43517
        18-05-19     72221       43735
        19-05-19     72314       43599
        20-05-19     72375       43685
        21-05-19     72449       43802
        22-05-19     72457       43751

 

AS Summary


         17348  Number of ASes in routing system
         11153  Number of ASes announcing only one prefix
          1380  Largest number of prefixes announced by an AS
                AS12479: UNI2-AS, ES
      288230634396909568 (/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.

         --- 22May19 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      72492    43740    28752    39.7%   All ASes

        AS22773      988       16      972    98.4%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS28573     1235      292      943    76.4%   CLARO S.A., BR
        AS12479     1380      569      811    58.8%   UNI2-AS, ES
        AS11172      878      172      706    80.4%   Alestra, S. de R.L. de C.V., MX
        AS7552       758      123      635    83.8%   VIETEL-AS-AP Viettel Group, VN
        AS45609      767      137      630    82.1%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS33363      669       53      616    92.1%   BHN-33363 - Charter Communications, Inc, US
        AS32098      658       45      613    93.2%   TRANSTELCO-INC - Transtelco Inc, US
        AS174        735      136      599    81.5%   COGENT-174 - Cogent Communications, US
        AS30036      732      207      525    71.7%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS8376      1306      796      510    39.1%   , JO
        AS17622      495       95      400    80.8%   CNCGROUP-GZ China Unicom Guangzhou network, CN
        AS45271      580      185      395    68.1%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS16509      841      474      367    43.6%   AMAZON-02 - Amazon.com, Inc., US
        AS9829       454      121      333    73.3%   BSNL-NIB National Internet Backbone, IN
        AS13142      333       10      323    97.0%   MOBIFONE-AS-VN MOBIFONE Corporation, VN
        AS9808       345       29      316    91.6%   CMNET-GD Guangdong Mobile Communication Co.Ltd., CN
        AS13361      526      224      302    57.4%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS3462       288       26      262    91.0%   HINET Data Communication Business Group, TW
        AS9605       272       13      259    95.2%   DOCOMO NTT DOCOMO, INC., JP
        AS24173      258        1      257    99.6%   NETNAM-AS-AP Netnam Company, VN
        AS13206      258        1      257    99.6%   REALMOVE-AS-AP Realmove Company Limited, TH
        AS55430      298       45      253    84.9%   STARHUB-NGNBN Starhub Ltd, SG
        AS4808       230       24      206    89.6%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS8151       262       66      196    74.8%   Uninet S.A. de C.V., MX
        AS54113      598      408      190    31.8%   FASTLY - Fastly, US
        AS17621      183       12      171    93.4%   CNCGROUP-SH China Unicom Shanghai network, CN
        AS22394      681      510      171    25.1%   CELLCO - Cellco Partnership DBA Verizon Wireless, US
        AS18403      214       47      167    78.0%   FPT-AS-AP The Corporation for Financing & Promoting Technology, VN
        AS24158      196       33      163    83.2%   TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW

        Total      17418     4870    12548    72.0%   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.