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Geoff Huston

Comments to: cidr-reports@potaroo.net



IPv6 CIDR REPORT for 28 Jun 22

Report Sections:


This report is generated from an analysis of the BGP routing table withinAS131072, and was produced at Tue Jun 28 17:46:15 2022 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        21-06-22    157586       84764
        22-06-22    157574       84958
        23-06-22    157592       84919
        24-06-22    157640       85156
        25-06-22    157895       85107
        26-06-22    157821       85053
        27-06-22    157854       85197
        28-06-22    157983       85197

 

AS Summary


         29099  Number of ASes in routing system
         18948  Number of ASes announcing only one prefix
          3868  Largest number of prefixes announced by an AS
                AS11172: Alestra, S. de R.L. de C.V., MX
      36318243520512 (/18.95) Largest address span announced by an AS (/64s)
                AS7922 : COMCAST-7922, 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.

         --- 28Jun22 ---
        ASnum         NetsNow NetsAggr  NetGain   % Gain   Description

        Table          158142    85209    72933    46.1%   All ASes

        AS11172          3868      140     3728    96.4%   Alestra, S. de R.L. de C.V., MX
        AS9808           3473     1096     2377    68.4%   CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
        AS7552           2167        5     2162    99.8%   VIETEL-AS-AP Viettel Group, VN
        AS45609          2233      458     1775    79.5%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS17622          2424      650     1774    73.2%   CNCGROUP-GZ China Unicom Guangzhou network, CN
        AS12479          1617        5     1612    99.7%   UNI2-AS, ES
        AS45271          1809      248     1561    86.3%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS28573          1467      177     1290    87.9%   Claro NXT Telecomunicacoes Ltda, BR
        AS22773          1255       27     1228    97.8%   ASN-CXA-ALL-CCI-22773-RDC, US
        AS39891          1168       69     1099    94.1%   ALJAWWALSTC-AS, SA
        AS62240          1120       62     1058    94.5%   CLOUVIDER Clouvider - Global ASN, GB
        AS32098          1125      139      986    87.6%   TRANSTELCO-INC, US
        AS16509          2221     1318      903    40.7%   AMAZON-02, US
        AS56046          1087      226      861    79.2%   CMNET-JIANGSU-AP China Mobile communications corporation, CN
        AS17623          1438      594      844    58.7%   CNCGROUP-SZ China Unicom Shenzen network, CN
        AS4808            901      113      788    87.5%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS24547          1612      851      761    47.2%   CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
        AS38266          1075      317      758    70.5%   VODAFONE-IN Vodafone India Ltd., IN
        AS18403           869      179      690    79.4%   FPT-AS-AP FPT Telecom Company, VN
        AS20115          1115      453      662    59.4%   CHARTER-20115, US
        AS4134            603       63      540    89.6%   CHINANET-BACKBONE No.31,Jin-rong Street, CN
        AS56047           644      140      504    78.3%   CMNET-HUNAN-AP China Mobile communications corporation, CN
        AS11664           499        5      494    99.0%   Techtel LMDS Comunicaciones Interactivas S.A., AR
        AS133612          753      265      488    64.8%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS36492           789      304      485    61.5%   GOOGLEWIFI, US
        AS24445           494       40      454    91.9%   CMNET-V4HENAN-AS-AP Henan Mobile Communications Co.,Ltd, CN
        AS17853           435        3      432    99.3%   LGTELECOM-AS-KR LGTELECOM, KR
        AS56044           971      551      420    43.3%   CMNET-AS-LIAONING China Mobile communications corporation, CN
        AS17552           419        9      410    97.9%   TRUEONLINE-AS-AP True Online, TH
        AS131429          486       79      407    83.7%   MOBIFONE-AS-VN MOBIFONE Corporation, VN

        Total           40137     8586    31551    78.6%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            3868 AS11172 Alestra, S. de R.L. de C.V., MX
            3473 AS9808  CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
            2424 AS17622 CNCGROUP-GZ China Unicom Guangzhou network, CN
            2233 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
            2221 AS16509 AMAZON-02, US
            2167 AS7552  VIETEL-AS-AP Viettel Group, VN
            1809 AS45271 ICLNET-AS-AP Idea Cellular Limited, IN
            1617 AS12479 UNI2-AS, ES
            1612 AS24547 CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
            1467 AS28573 Claro NXT Telecomunicacoes Ltda, BR
            1438 AS17623 CNCGROUP-SZ China Unicom Shenzen network, CN
            1340 AS36183 AKAMAI-AS, US
            1255 AS22773 ASN-CXA-ALL-CCI-22773-RDC, US
            1168 AS39891 ALJAWWALSTC-AS, SA
            1125 AS32098 TRANSTELCO-INC, US
            1120 AS62240 CLOUVIDER Clouvider - Global ASN, GB
            1115 AS20115 CHARTER-20115, US
            1087 AS56046 CMNET-JIANGSU-AP China Mobile communications corporation, CN
            1075 AS38266 VODAFONE-IN Vodafone India Ltd., IN
            1042 AS13335 CLOUDFLARENET, 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.