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Geoff Huston

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IPv6 CIDR REPORT for 27 Jul 17

Report Sections:


This report is generated from an analysis of the BGP routing table within AS2.0 (APNIC), and was produced at Thu Jul 27 03:45:21 2017 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        20-07-17     41510       27068
        21-07-17     41553       27068
        22-07-17     41603       27057
        23-07-17     41596       27042
        24-07-17     41586       27090
        25-07-17     41651       27131
        26-07-17     41718       27144
        27-07-17     41700       27144

 

AS Summary


         13721  Number of ASes in routing system
          9477  Number of ASes announcing only one prefix
          1376  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.

         --- 27Jul17 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      41696    27136    14560    34.9%   All ASes

        AS22773     1376       62     1314    95.5%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS13361     1039       32     1007    96.9%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS28573      729      260      469    64.3%   CLARO S.A., BR
        AS3651       336       55      281    83.6%   SPRINT-BB6 - Sprint, 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
        AS16509      528      261      267    50.6%   AMAZON-02 - Amazon.com, Inc., US
        AS9605       268        9      259    96.6%   DOCOMO NTT DOCOMO, INC., JP
        AS174        350      103      247    70.6%   COGENT-174 - Cogent Communications, US
        AS20277      258       11      247    95.7%   OSP-EU-WEST-001, GB
        AS32098      433      220      213    49.2%   TRANSTELCO-INC - Transtelco Inc, US
        AS8151       205        5      200    97.6%   Uninet S.A. de C.V., MX
        AS54540      276       80      196    71.0%   INCERO - Incero LLC, US
        AS18403      170        1      169    99.4%   FPT-AS-AP The Corporation for Financing & Promoting Technology, VN
        AS30036      210       46      164    78.1%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS36992      172       23      149    86.6%   ETISALAT-MISR, EG
        AS13489      135        4      131    97.0%   EPM Telecomunicaciones S.A. E.S.P., CO
        AS20057      149       25      124    83.2%   ATT-MOBILITY-LLC-AS20057 - AT&T Mobility LLC, US
        AS22394      438      328      110    25.1%   CELLCO - Cellco Partnership DBA Verizon Wireless, US
        AS25019      170       65      105    61.8%   SAUDINETSTC-AS, SA
        AS13122      129       34       95    73.6%   MTS-INDIA-IN 334,Udyog Vihar, IN
        AS43766       99       23       76    76.8%   MTC-KSA-AS, SA
        AS6327        83        9       74    89.2%   SHAW - Shaw Communications Inc., CA
        AS15169       87       14       73    83.9%   GOOGLE - Google Inc., US
        AS19551      199      126       73    36.7%   INCAPSULA - Incapsula Inc, US
        AS9931        77        6       71    92.2%   CAT-AP The Communication Authoity of Thailand, CAT, TH
        AS17451       68        4       64    94.1%   BIZNET-AS-AP BIZNET NETWORKS, ID
        AS17552       75       11       64    85.3%   TRUE-AS-AP True Internet Co.,Ltd., TH
        AS17832       84       27       57    67.9%   SIXNGIX Korea Internet Security Agency, KR
        AS13144       71       14       57    80.3%   AIS3G-2100-AS-AP Advance Wireless Network, TH

        Total       8781     1883     6898    78.6%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            1376 AS22773 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
            1039 AS133612 VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
             729 AS28573 CLARO S.A., BR
             528 AS16509 AMAZON-02 - Amazon.com, Inc., US
             438 AS22394 CELLCO - Cellco Partnership DBA Verizon Wireless, US
             433 AS32098 TRANSTELCO-INC - Transtelco Inc, US
             391 AS20940 AKAMAI-ASN1, US
             350 AS174   COGENT-174 - Cogent Communications, US
             336 AS3651  SPRINT-BB6 - Sprint, US
             307 AS15133 EDGECAST - MCI Communications Services, Inc. d/b/a Verizon Business, US
             290 AS55430 STARHUBINTERNET-AS-NGNBN Starhub Internet Pte Ltd, SG
             277 AS7470  TRUEINTERNET-AS-AP TRUE INTERNET Co.,Ltd., TH
             276 AS54540 INCERO - Incero LLC, US
             268 AS9605  DOCOMO NTT DOCOMO, INC., JP
             258 AS202773 OSP-EU-WEST-001, GB
             240 AS54113 FASTLY - Fastly, US
             217 AS12041 AS-AFILIAS1 - Afilias Canada, Corp., CA
             210 AS30036 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
             205 AS8151  Uninet S.A. de C.V., MX
             199 AS19551 INCAPSULA - Incapsula Inc, 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.