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Geoff Huston

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IPv6 CIDR REPORT for 23 Mar 17

Report Sections:


This report is generated from an analysis of the BGP routing table within AS2.0 (RouteViews), and was produced at Thu Mar 23 00:18:42 2017 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        16-03-17     39717       26873
        17-03-17     39778       27037
        18-03-17     39807       27055
        19-03-17     39798       26919
        20-03-17     39802       27117
        21-03-17     40067       26978
        22-03-17     40055       26800
        23-03-17     40097       27174

 

AS Summary


         13300  Number of ASes in routing system
          9157  Number of ASes announcing only one prefix
          1332  Largest number of prefixes announced by an AS
                AS22773: ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
      4503674827112448 (/12.00) Largest address span announced by an AS (/64s)
                AS13489: EPM Telecomunicaciones S.A. E.S.P., CO


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.

         --- 23Mar17 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      40097    27174    12923    32.2%   All ASes

        AS22773     1332       54     1278    95.9%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS28573      601      174      427    71.0%   CLARO S.A., BR
        AS3651       404       58      346    85.6%   SPRINT-BB6 - Sprint, US
        AS3257       359       14      345    96.1%   GTT-BACKBONE GTT, DE
        AS174        685      380      305    44.5%   COGENT-174 - Cogent Communications, US
        AS55430      288       20      268    93.1%   STARHUBINTERNET-AS-NGNBN Starhub Internet Pte Ltd, SG
        AS16509      473      207      266    56.2%   AMAZON-02 - Amazon.com, Inc., US
        AS9605       266        7      259    97.4%   DOCOMO NTT DOCOMO, INC., JP
        AS13206      258        1      257    99.6%   REALMOVE-AS-AP Realmove Company Limited, TH
        AS20277      255        8      247    96.9%   OSP-EU-WEST-001, GB
        AS32098      391      198      193    49.4%   TRANSTELCO-INC - Transtelco Inc, US
        AS18403      191        7      184    96.3%   FPT-AS-AP The Corporation for Financing & Promoting Technology, VN
        AS30036      221       63      158    71.5%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS36992      166       28      138    83.1%   ETISALAT-MISR, EG
        AS20057      149       25      124    83.2%   ATT-MOBILITY-LLC-AS20057 - AT&T Mobility LLC, US
        AS25019      169       45      124    73.4%   SAUDINETSTC-AS, SA
        AS22394      440      332      108    24.5%   CELLCO - Cellco Partnership DBA Verizon Wireless, US
        AS13122      131       36       95    72.5%   MTS-INDIA-IN 334,Udyog Vihar, IN
        AS43766       99       23       76    76.8%   MTC-KSA-AS, SA
        AS15169       88       14       74    84.1%   GOOGLE - Google Inc., US
        AS10091      106       35       71    67.0%   SCV-AS-AP StarHub Cable Vision Ltd, SG
        AS17451       67        1       66    98.5%   BIZNET-AS-AP BIZNET NETWORKS, ID
        AS17552       84       20       64    76.2%   TRUE-AS-AP True Internet Co.,Ltd., TH
        AS19551      176      112       64    36.4%   INCAPSULA - Incapsula Inc, US
        AS21928      115       53       62    53.9%   T-MOBILE-AS21928 - T-Mobile USA, Inc., US
        AS17832       90       33       57    63.3%   SIXNGIX Korea Internet Security Agency, KR
        AS9931        63        7       56    88.9%   CAT-AP The Communication Authoity of Thailand, CAT, TH
        AS15133      344      288       56    16.3%   EDGECAST - MCI Communications Services, Inc. d/b/a Verizon Business, US
        AS2906       113       59       54    47.8%   AS-SSI - Netflix Streaming Services Inc., US
        AS13144       59        5       54    91.5%   AIS3G-2100-AS-AP Advance Wireless Network, TH

        Total       8183     2307     5876    71.8%   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.