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Geoff Huston

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IPv6 CIDR REPORT for 24 Sep 18

Report Sections:


This report is generated from an analysis of the BGP routing table within AS2.0 (APNIC), and was produced at Mon Sep 24 22:45:40 2018 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        17-09-18     57194       35069
        18-09-18     57475       35099
        19-09-18     57399       35184
        20-09-18     57474       35284
        21-09-18     57593       35261
        22-09-18     57627       35285
        23-09-18     57686       35299
        24-09-18     57697       35299

 

AS Summary


         15878  Number of ASes in routing system
         10548  Number of ASes announcing only one prefix
          1139  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.

         --- 24Sep18 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      57557    35199    22358    38.8%   All ASes

        AS12479     1139        6     1133    99.5%   UNI2-AS, ES
        AS22773      982       19      963    98.1%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS28573      893      117      776    86.9%   CLARO S.A., BR
        AS45609      789       57      732    92.8%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS32098      614       23      591    96.3%   TRANSTELCO-INC - Transtelco Inc, US
        AS33363      651      137      514    79.0%   BHN-TAMPA - BRIGHT HOUSE NETWORKS, LLC, US
        AS7552       550      100      450    81.8%   VIETEL-AS-AP Viettel Group, VN
        AS45271      455       64      391    85.9%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS13361      551      194      357    64.8%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS16509      718      373      345    48.1%   AMAZON-02 - Amazon.com, Inc., US
        AS9808       319       14      305    95.6%   CMNET-GD Guangdong Mobile Communication Co.Ltd., CN
        AS174        395      105      290    73.4%   COGENT-174 - Cogent Communications, US
        AS54113      595      323      272    45.7%   FASTLY - Fastly, US
        AS55430      290       20      270    93.1%   STARHUBINTERNET-AS-NGNBN Starhub Internet Pte Ltd, SG
        AS9605       272       13      259    95.2%   DOCOMO NTT DOCOMO, INC., JP
        AS30036      418      159      259    62.0%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS13206      258        1      257    99.6%   REALMOVE-AS-AP Realmove Company Limited, TH
        AS4808       217       20      197    90.8%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS54540      301      106      195    64.8%   INCERO - Incero LLC, US
        AS3651       221       39      182    82.4%   SPRINT-BB6 - Sprint, US
        AS17622      344      180      164    47.7%   CNCGROUP-GZ China Unicom Guangzhou network, CN
        AS10507      200       37      163    81.5%   SPCS - Sprint Personal Communications Systems, US
        AS11172      200       38      162    81.0%   Alestra, S. de R.L. de C.V., MX
        AS18403      169        7      162    95.9%   FPT-AS-AP The Corporation for Financing & Promoting Technology, VN
        AS17621      167       15      152    91.0%   CNCGROUP-SH China Unicom Shanghai network, CN
        AS22394      463      329      134    28.9%   CELLCO - Cellco Partnership DBA Verizon Wireless, US
        AS7497       154       21      133    86.4%   CSTNET-AS-AP Computer Network Information Center, CN
        AS17552      146       18      128    87.7%   TRUE-AS-AP True Internet Co.,Ltd., TH
        AS20057      158       31      127    80.4%   ATT-MOBILITY-LLC-AS20057 - AT&T Mobility LLC, US
        AS38266      172       45      127    73.8%   VODAFONE-IN Vodafone India Ltd., IN

        Total      12801     2611    10190    79.6%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            1139 AS12479 UNI2-AS, ES
             982 AS22773 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
             893 AS28573 CLARO S.A., BR
             789 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
             718 AS16509 AMAZON-02 - Amazon.com, Inc., US
             651 AS33363 BHN-TAMPA - BRIGHT HOUSE NETWORKS, LLC, US
             614 AS32098 TRANSTELCO-INC - Transtelco Inc, US
             595 AS54113 FASTLY - Fastly, US
             551 AS133612 VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
             550 AS7552  VIETEL-AS-AP Viettel Group, VN
             477 AS20940 AKAMAI-ASN1, US
             463 AS22394 CELLCO - Cellco Partnership DBA Verizon Wireless, US
             455 AS45271 ICLNET-AS-AP Idea Cellular Limited, IN
             426 AS13335 CLOUDFLARENET - Cloudflare, Inc., US
             418 AS30036 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
             395 AS174   COGENT-174 - Cogent Communications, US
             360 AS20473 AS-CHOOPA - Choopa, LLC, US
             345 AS19551 INCAPSULA - Incapsula Inc, US
             344 AS17622 CNCGROUP-GZ China Unicom Guangzhou network, CN
             319 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.