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Geoff Huston

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IPv6 CIDR REPORT for 18 Nov 17

Report Sections:


This report is generated from an analysis of the BGP routing table within AS2.0 (APNIC), and was produced at Sat Nov 18 18:45:30 2017 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        11-11-17     43817       28519
        12-11-17     43803       28522
        13-11-17     43817       28537
        14-11-17     43712       28596
        15-11-17     43805       28699
        16-11-17     43934       28779
        17-11-17     43981       28792
        18-11-17     43960       28792

 

AS Summary


         14324  Number of ASes in routing system
          9837  Number of ASes announcing only one prefix
          1242  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.

         --- 18Nov17 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      43959    28792    15167    34.5%   All ASes

        AS22773     1242       62     1180    95.0%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS13361      595       40      555    93.3%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS28573      806      298      508    63.0%   CLARO S.A., BR
        AS16509      584      297      287    49.1%   AMAZON-02 - Amazon.com, Inc., US
        AS7470       277        5      272    98.2%   TRUEINTERNET-AS-AP TRUE INTERNET Co.,Ltd., TH
        AS55430      290       20      270    93.1%   STARHUBINTERNET-AS-NGNBN Starhub Internet Pte Ltd, SG
        AS9605       268        9      259    96.6%   DOCOMO NTT DOCOMO, INC., JP
        AS174        358      103      255    71.2%   COGENT-174 - Cogent Communications, US
        AS3651       296       49      247    83.4%   SPRINT-BB6 - Sprint, US
        AS20277      265       18      247    93.2%   OSP-EU-WEST-001, GB
        AS8151       252       11      241    95.6%   Uninet S.A. de C.V., MX
        AS32098      479      247      232    48.4%   TRANSTELCO-INC - Transtelco Inc, US
        AS54540      293       94      199    67.9%   INCERO - Incero LLC, US
        AS13489      198        5      193    97.5%   EPM Telecomunicaciones S.A. E.S.P., CO
        AS54113      409      227      182    44.5%   FASTLY - Fastly, US
        AS18403      172        3      169    98.3%   FPT-AS-AP The Corporation for Financing & Promoting Technology, VN
        AS30036      213       44      169    79.3%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS36992      173       37      136    78.6%   ETISALAT-MISR, EG
        AS20057      157       27      130    82.8%   ATT-MOBILITY-LLC-AS20057 - AT&T Mobility LLC, US
        AS22394      439      323      116    26.4%   CELLCO - Cellco Partnership DBA Verizon Wireless, US
        AS19551      282      168      114    40.4%   INCAPSULA - Incapsula Inc, US
        AS45609      157       44      113    72.0%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS10507      121       20      101    83.5%   SPCS - Sprint Personal Communications Systems, US
        AS14522       86        8       78    90.7%   Satnet, EC
        AS43766       99       23       76    76.8%   MTC-KSA-AS, SA
        AS6327        86       11       75    87.2%   SHAW - Shaw Communications Inc., CA
        AS9931        79        5       74    93.7%   CAT-AP The Communication Authoity of Thailand, CAT, TH
        AS15169       88       14       74    84.1%   GOOGLE - Google LLC, US
        AS25019      114       40       74    64.9%   SAUDINETSTC-AS, SA
        AS17451       67        5       62    92.5%   BIZNET-AS-AP BIZNET NETWORKS, ID

        Total       8945     2257     6688    74.8%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            1242 AS22773 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
             806 AS28573 CLARO S.A., BR
             595 AS133612 VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
             584 AS16509 AMAZON-02 - Amazon.com, Inc., US
             479 AS32098 TRANSTELCO-INC - Transtelco Inc, US
             439 AS22394 CELLCO - Cellco Partnership DBA Verizon Wireless, US
             420 AS20940 AKAMAI-ASN1, US
             409 AS54113 FASTLY - Fastly, US
             358 AS174   COGENT-174 - Cogent Communications, US
             296 AS3651  SPRINT-BB6 - Sprint, US
             293 AS54540 INCERO - Incero LLC, US
             290 AS55430 STARHUBINTERNET-AS-NGNBN Starhub Internet Pte Ltd, SG
             282 AS19551 INCAPSULA - Incapsula Inc, US
             277 AS7470  TRUEINTERNET-AS-AP TRUE INTERNET Co.,Ltd., TH
             268 AS9605  DOCOMO NTT DOCOMO, INC., JP
             268 AS15133 EDGECAST - MCI Communications Services, Inc. d/b/a Verizon Business, US
             265 AS202773 OSP-EU-WEST-001, GB
             252 AS8151  Uninet S.A. de C.V., MX
             218 AS12041 AS-AFILIAS1 - Afilias Canada, Corp., CA
             213 AS30036 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US


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.