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Geoff Huston

Comments to: cidr-reports@potaroo.net



IPv6 CIDR REPORT for 27 Jun 17

Report Sections:


This report is generated from an analysis of the BGP routing table within AS2.0 (RouteViews), and was produced at Tue Jun 27 08:15:06 2017 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        20-06-17     42407       28694
        21-06-17     42593       28831
        22-06-17     42661       28868
        23-06-17     42728       28714
        24-06-17     42766       28760
        25-06-17     42742       28786
        26-06-17     42762       28823
        27-06-17     42775       28789

 

AS Summary


         13773  Number of ASes in routing system
          9396  Number of ASes announcing only one prefix
          1361  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.

         --- 27Jun17 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      42694    28651    14043    32.9%   All ASes

        AS22773     1361       37     1324    97.3%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS28573      798      258      540    67.7%   CLARO S.A., BR
        AS174        590      287      303    51.4%   COGENT-174 - Cogent Communications, US
        AS16509      577      278      299    51.8%   AMAZON-02 - Amazon.com, Inc., US
        AS3651       340       54      286    84.1%   SPRINT-BB6 - Sprint, US
        AS55430      292       31      261    89.4%   STARHUBINTERNET-AS-NGNBN Starhub Internet Pte Ltd, SG
        AS9605       268        9      259    96.6%   DOCOMO NTT DOCOMO, INC., JP
        AS32098      422      164      258    61.1%   TRANSTELCO-INC - Transtelco 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
        AS18403      204        1      203    99.5%   FPT-AS-AP The Corporation for Financing & Promoting Technology, VN
        AS8151       204        5      199    97.5%   Uninet S.A. de C.V., MX
        AS54540      270       77      193    71.5%   INCERO - Incero LLC, US
        AS30036      226       49      177    78.3%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS36992      168       30      138    82.1%   ETISALAT-MISR, EG
        AS25019      169       44      125    74.0%   SAUDINETSTC-AS, SA
        AS20057      149       25      124    83.2%   ATT-MOBILITY-LLC-AS20057 - AT&T Mobility LLC, US
        AS22394      441      334      107    24.3%   CELLCO - Cellco Partnership DBA Verizon Wireless, US
        AS13361      110        8      102    92.7%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS13122      129       38       91    70.5%   MTS-INDIA-IN 334,Udyog Vihar, IN
        AS13489      109       22       87    79.8%   EPM Telecomunicaciones S.A. E.S.P., CO
        AS43766       99       23       76    76.8%   MTC-KSA-AS, SA
        AS15169       88       14       74    84.1%   GOOGLE - Google Inc., US
        AS6327        82       15       67    81.7%   SHAW - Shaw Communications Inc., CA
        AS17451       68        1       67    98.5%   BIZNET-AS-AP BIZNET NETWORKS, ID
        AS17552       84       17       67    79.8%   TRUE-AS-AP True Internet Co.,Ltd., TH
        AS21928      115       50       65    56.5%   T-MOBILE-AS21928 - T-Mobile USA, Inc., US
        AS13144       70        6       64    91.4%   AIS3G-2100-AS-AP Advance Wireless Network, TH
        AS15133      323      260       63    19.5%   EDGECAST - MCI Communications Services, Inc. d/b/a Verizon Business, US
        AS19551      183      120       63    34.4%   INCAPSULA - Incapsula Inc, US

        Total       8455     2269     6186    73.2%   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.