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Geoff Huston

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IPv6 CIDR REPORT for 23 Aug 17

Report Sections:


This report is generated from an analysis of the BGP routing table within AS2.0 (RouteViews), and was produced at Wed Aug 23 15:19:37 2017 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        16-08-17     45288       30388
        17-08-17     45376       30603
        18-08-17     45389       30612
        19-08-17     45386       30337
        20-08-17     45380       30402
        21-08-17     45363       30501
        22-08-17     45442       30571
        23-08-17     45358       30287

 

AS Summary


         14064  Number of ASes in routing system
          9545  Number of ASes announcing only one prefix
          1374  Largest number of prefixes announced by an AS
                AS22773: ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
      36318243520512 (/18.95) Largest address span announced by an AS (/64s)
                AS7922 : COMCAST-7922 - Comcast Cable Communications, LLC, 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.

         --- 23Aug17 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      45409    30415    14994    33.0%   All ASes

        AS22773     1374       42     1332    96.9%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS28573      799      140      659    82.5%   CLARO S.A., BR
        AS174        594      295      299    50.3%   COGENT-174 - Cogent Communications, US
        AS55430      292       21      271    92.8%   STARHUBINTERNET-AS-NGNBN Starhub Internet Pte Ltd, SG
        AS3651       320       54      266    83.1%   SPRINT-BB6 - Sprint, US
        AS32098      437      172      265    60.6%   TRANSTELCO-INC - Transtelco Inc, US
        AS9605       268        9      259    96.6%   DOCOMO NTT DOCOMO, INC., JP
        AS16509      545      287      258    47.3%   AMAZON-02 - Amazon.com, Inc., US
        AS13206      258        1      257    99.6%   REALMOVE-AS-AP Realmove Company Limited, TH
        AS20277      258       11      247    95.7%   OSP-EU-WEST-001, GB
        AS54540      285       91      194    68.1%   INCERO - Incero LLC, US
        AS8151       208       19      189    90.9%   Uninet S.A. de C.V., MX
        AS18403      196       16      180    91.8%   FPT-AS-AP The Corporation for Financing & Promoting Technology, VN
        AS30036      210       51      159    75.7%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS36992      172       23      149    86.6%   ETISALAT-MISR, EG
        AS13489      153        5      148    96.7%   EPM Telecomunicaciones S.A. E.S.P., CO
        AS20057      153       27      126    82.4%   ATT-MOBILITY-LLC-AS20057 - AT&T Mobility LLC, US
        AS25019      161       42      119    73.9%   SAUDINETSTC-AS, SA
        AS22394      438      335      103    23.5%   CELLCO - Cellco Partnership DBA Verizon Wireless, US
        AS13122      129       34       95    73.6%   MTS-INDIA-IN 334,Udyog Vihar, IN
        AS13361       92        7       85    92.4%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS43766       99       23       76    76.8%   MTC-KSA-AS, SA
        AS15133      299      224       75    25.1%   EDGECAST - MCI Communications Services, Inc. d/b/a Verizon Business, US
        AS15169       87       15       72    82.8%   GOOGLE - Google Inc., US
        AS17451       68        1       67    98.5%   BIZNET-AS-AP BIZNET NETWORKS, ID
        AS10091      100       35       65    65.0%   SCV-AS-AP StarHub Cable Vision Ltd, SG
        AS17552       75       11       64    85.3%   TRUE-AS-AP True Internet Co.,Ltd., TH
        AS6327        84       21       63    75.0%   SHAW - Shaw Communications Inc., CA
        AS13348       82       19       63    76.8%   AIS-FIBRE-AS-AP AIS Fibre, TH
        AS17832       92       33       59    64.1%   SIXNGIX Korea Internet Security Agency, KR

        Total       8328     2064     6264    75.2%   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.