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Geoff Huston

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IPv6 CIDR REPORT for 17 Nov 18

Report Sections:


This report is generated from an analysis of the BGP routing table within AS2.0 (APNIC), and was produced at Sat Nov 17 18:45:48 2018 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        10-11-18     60029       36181
        11-11-18     60012       36228
        12-11-18     60200       36259
        13-11-18     60354       36317
        14-11-18     60391       36428
        15-11-18     60467       36479
        16-11-18     60482       36221
        17-11-18     60602       36221

 

AS Summary


         16142  Number of ASes in routing system
         10668  Number of ASes announcing only one prefix
          1229  Largest number of prefixes announced by an AS
                AS12479: UNI2-AS, ES
      36318243454976 (/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.

         --- 17Nov18 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      60599    36260    24339    40.2%   All ASes

        AS12479     1229        6     1223    99.5%   UNI2-AS, ES
        AS22773      988       14      974    98.6%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS28573      928      120      808    87.1%   CLARO S.A., BR
        AS45609      807       58      749    92.8%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS32098      631        3      628    99.5%   TRANSTELCO-INC - Transtelco Inc, US
        AS33363      650       59      591    90.9%   BHN-TAMPA - BRIGHT HOUSE NETWORKS, LLC, US
        AS7552       587       85      502    85.5%   VIETEL-AS-AP Viettel Group, VN
        AS30036      690      221      469    68.0%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS11172      515      115      400    77.7%   Alestra, S. de R.L. de C.V., MX
        AS45271      482       82      400    83.0%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS13361      572      205      367    64.2%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS16509      732      393      339    46.3%   AMAZON-02 - Amazon.com, Inc., US
        AS9808       323       10      313    96.9%   CMNET-GD Guangdong Mobile Communication Co.Ltd., CN
        AS174        402      107      295    73.4%   COGENT-174 - Cogent Communications, US
        AS55430      289       20      269    93.1%   STARHUB-NGNBN Starhub Ltd, SG
        AS9605       272       13      259    95.2%   DOCOMO NTT DOCOMO, INC., JP
        AS13206      258        1      257    99.6%   REALMOVE-AS-AP Realmove Company Limited, TH
        AS13142      262       25      237    90.5%   MOBIFONE-AS-VN MOBIFONE Corporation, VN
        AS4808       218       18      200    91.7%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS54540      303      104      199    65.7%   INCERO - Incero LLC, US
        AS17622      349      160      189    54.2%   CNCGROUP-GZ China Unicom Guangzhou network, CN
        AS3651       221       36      185    83.7%   SPRINT-BB6 - Sprint, US
        AS54113      550      371      179    32.5%   FASTLY - Fastly, US
        AS10507      201       32      169    84.1%   SPCS - Sprint Personal Communications Systems, US
        AS18403      169        9      160    94.7%   FPT-AS-AP The Corporation for Financing & Promoting Technology, VN
        AS17621      171       13      158    92.4%   CNCGROUP-SH China Unicom Shanghai network, CN
        AS8151       226       72      154    68.1%   Uninet S.A. de C.V., MX
        AS4837       283      146      137    48.4%   CHINA169-BACKBONE CHINA UNICOM China169 Backbone, CN
        AS17552      155       19      136    87.7%   TRUE-AS-AP True Internet Co.,Ltd., TH
        AS38266      198       62      136    68.7%   VODAFONE-IN Vodafone India Ltd., IN

        Total      13661     2579    11082    81.1%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            1229 AS12479 UNI2-AS, ES
             988 AS22773 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
             928 AS28573 CLARO S.A., BR
             807 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
             732 AS16509 AMAZON-02 - Amazon.com, Inc., US
             690 AS30036 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
             650 AS33363 BHN-TAMPA - BRIGHT HOUSE NETWORKS, LLC, US
             631 AS32098 TRANSTELCO-INC - Transtelco Inc, US
             587 AS7552  VIETEL-AS-AP Viettel Group, VN
             572 AS133612 VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
             550 AS54113 FASTLY - Fastly, US
             515 AS11172 Alestra, S. de R.L. de C.V., MX
             490 AS20940 AKAMAI-ASN1, US
             482 AS45271 ICLNET-AS-AP Idea Cellular Limited, IN
             479 AS22394 CELLCO - Cellco Partnership DBA Verizon Wireless, US
             465 AS13335 CLOUDFLARENET - Cloudflare, Inc., US
             402 AS174   COGENT-174 - Cogent Communications, US
             368 AS19551 INCAPSULA - Incapsula Inc, US
             349 AS17622 CNCGROUP-GZ China Unicom Guangzhou network, CN
             323 AS9808  CMNET-GD Guangdong Mobile Communication Co.Ltd., CN


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.