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Geoff Huston

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IPv6 CIDR REPORT for 24 May 18

Report Sections:


This report is generated from an analysis of the BGP routing table within AS2.0 (APNIC), and was produced at Thu May 24 20:45:30 2018 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        17-05-18     51333       31863
        18-05-18     51030       31898
        19-05-18     51130       31921
        20-05-18     51088       31689
        21-05-18     51203       31709
        22-05-18     51169       31799
        23-05-18     51240       31675
        24-05-18     51363       31675

 

AS Summary


         15272  Number of ASes in routing system
         10300  Number of ASes announcing only one prefix
          1250  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.

         --- 24May18 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      51591    31900    19691    38.2%   All ASes

        AS22773     1250       24     1226    98.1%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS28573      887      142      745    84.0%   CLARO S.A., BR
        AS12479      870      152      718    82.5%   UNI2-AS, ES
        AS32098      550        3      547    99.5%   TRANSTELCO-INC - Transtelco Inc, US
        AS45609      436       50      386    88.5%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS54113      646      277      369    57.1%   FASTLY - Fastly, US
        AS16509      679      345      334    49.2%   AMAZON-02 - Amazon.com, Inc., US
        AS33363      362       38      324    89.5%   BHN-TAMPA - BRIGHT HOUSE NETWORKS, LLC, US
        AS13489      327        6      321    98.2%   EPM Telecomunicaciones S.A. E.S.P., CO
        AS13361      502      186      316    62.9%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS174        380      100      280    73.7%   COGENT-174 - Cogent Communications, US
        AS45271      342       72      270    78.9%   ICLNET-AS-AP Idea Cellular Limited, IN
        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
        AS8151       286       29      257    89.9%   Uninet S.A. de C.V., MX
        AS13206      258        1      257    99.6%   REALMOVE-AS-AP Realmove Company Limited, TH
        AS20277      256        9      247    96.5%   OSP-EU-WEST-001, GB
        AS54540      298       98      200    67.1%   INCERO - Incero LLC, US
        AS3651       221       36      185    83.7%   SPRINT-BB6 - Sprint, US
        AS18403      173        4      169    97.7%   FPT-AS-AP The Corporation for Financing & Promoting Technology, VN
        AS10507      200       34      166    83.0%   SPCS - Sprint Personal Communications Systems, US
        AS30036      219       68      151    68.9%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS17621      156        6      150    96.2%   CNCGROUP-SH China Unicom Shanghai network, CN
        AS17622      159       11      148    93.1%   CNCGROUP-GZ China Unicom Guangzhou network, CN
        AS20057      158       28      130    82.3%   ATT-MOBILITY-LLC-AS20057 - AT&T Mobility LLC, US
        AS22394      451      321      130    28.8%   CELLCO - Cellco Partnership DBA Verizon Wireless, US
        AS19551      350      230      120    34.3%   INCAPSULA - Incapsula Inc, US
        AS38266      133       23      110    82.7%   HUTCHVAS-AS Vodafone Essar Ltd., Telecommunication - Value Added Services, IN
        AS36992      161       55      106    65.8%   ETISALAT-MISR, EG
        AS52257      150       46      104    69.3%   Telconet S.A, EC

        Total      11418     2423     8995    78.8%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            1250 AS22773 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
             887 AS28573 CLARO S.A., BR
             870 AS12479 UNI2-AS, ES
             679 AS16509 AMAZON-02 - Amazon.com, Inc., US
             646 AS54113 FASTLY - Fastly, US
             550 AS32098 TRANSTELCO-INC - Transtelco Inc, US
             502 AS133612 VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
             461 AS20940 AKAMAI-ASN1, US
             451 AS22394 CELLCO - Cellco Partnership DBA Verizon Wireless, US
             436 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
             380 AS174   COGENT-174 - Cogent Communications, US
             362 AS33363 BHN-TAMPA - BRIGHT HOUSE NETWORKS, LLC, US
             350 AS19551 INCAPSULA - Incapsula Inc, US
             342 AS45271 ICLNET-AS-AP Idea Cellular Limited, IN
             327 AS13489 EPM Telecomunicaciones S.A. E.S.P., CO
             298 AS54540 INCERO - Incero LLC, US
             290 AS55430 STARHUBINTERNET-AS-NGNBN Starhub Internet Pte Ltd, SG
             286 AS8151  Uninet S.A. de C.V., MX
             283 AS15133 EDGECAST - MCI Communications Services, Inc. d/b/a Verizon Business, US
             268 AS9605  DOCOMO NTT DOCOMO, INC., JP


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.