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Geoff Huston

Comments to: cidr-reports@potaroo.net



IPv6 CIDR REPORT for 7 Jun 25

Report Sections:


This report is generated from an analysis of the BGP routing table withinAS131072, and was produced at Sat Jun 7 05:46:35 2025 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        31-05-25    226455      114982
        01-06-25    226279      114763
        02-06-25    226388      115081
        03-06-25    226327      115129
        04-06-25    226269      115556
        05-06-25    226439      115883
        06-06-25    226215      116121
        07-06-25    226285      116121

 

AS Summary


         35069  Number of ASes in routing system
         21461  Number of ASes announcing only one prefix
          6650  Largest number of prefixes announced by an AS
                AS9808 : CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
      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.

         --- 07Jun25 ---
        ASnum         NetsNow NetsAggr  NetGain   % Gain   Description

        Table          226343   116152   110191    48.7%   All ASes

        AS9808           6650      808     5842    87.8%   CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
        AS7552           3917      204     3713    94.8%   VIETEL-AS-AP Viettel Group, VN
        AS45609          3414      912     2502    73.3%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS18403          3468     1268     2200    63.4%   FPT-AS-AP FPT Telecom Company, VN
        AS16509          5114     2922     2192    42.9%   AMAZON-02, US
        AS39891          2073       44     2029    97.9%   ALJAWWALSTC-AS, SA
        AS24547          1732       33     1699    98.1%   CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
        AS11172          2117      519     1598    75.5%   Alestra, S. de R.L. de C.V., MX
        AS56041          1500      113     1387    92.5%   CMNET-ZHEJIANG-AP China Mobile communications corporation, CN
        AS56046          1403       56     1347    96.0%   CMNET-JIANGSU-AP China Mobile communications corporation, CN
        AS28573          1579      239     1340    84.9%   Claro NXT Telecomunicacoes Ltda, BR
        AS32098          1458      142     1316    90.3%   TRANSTELCO-INC, US
        AS22773          1321       37     1284    97.2%   ASN-CXA-ALL-CCI-22773-RDC, US
        AS56044          1247       22     1225    98.2%   CMNET-AS-LIAONING China Mobile communications corporation, CN
        AS47331          1246       57     1189    95.4%   TTNET, TR
        AS45271          1341      271     1070    79.8%   VIL-AS-AP Vodafone Idea Ltd, IN
        AS5416           1040        3     1037    99.7%   Internet Service Provider, BH
        AS132884         1028        4     1024    99.6%   SUMMIT-BD Summit Communications Limited, BD
        AS26611          1128      108     1020    90.4%   COMUNICACION CELULAR S.A. COMCEL S.A., CO
        AS4808           1155      139     1016    88.0%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS38266          1449      464      985    68.0%   VIL-AS-AP Vodafone Idea Ltd, IN
        AS12479          1604      671      933    58.2%   UNI2-AS, ES
        AS62240          1012      114      898    88.7%   CLOUVIDER Clouvider - Global ASN, GB
        AS17853           739        4      735    99.5%   LGTELECOM-AS-KR LGTELECOM, KR
        AS11664           949      243      706    74.4%   Techtel LMDS Comunicaciones Interactivas S.A., AR
        AS56167           648       14      634    97.8%   PTML-PK Plot No 181-186 Street, PK
        AS12025           654       38      616    94.2%   IMDC-AS12025, US
        AS4134            621       40      581    93.6%   CHINANET-BACKBONE No.31,Jin-rong Street, CN
        AS56047           722      147      575    79.6%   CMNET-HUNAN-AP China Mobile communications corporation, CN
        AS131429          621       73      548    88.2%   MOBIFONE-AS-VN MOBIFONE Corporation, VN

        Total           52950     9709    43241    81.7%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            6650 AS9808  CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
            5114 AS16509 AMAZON-02, US
            3917 AS7552  VIETEL-AS-AP Viettel Group, VN
            3468 AS18403 FPT-AS-AP FPT Telecom Company, VN
            3414 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
            2860 AS13335 CLOUDFLARENET, US
            2117 AS11172 Alestra, S. de R.L. de C.V., MX
            2073 AS39891 ALJAWWALSTC-AS, SA
            1732 AS24547 CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
            1715 AS36183 AKAMAI-AS, US
            1604 AS12479 UNI2-AS, ES
            1579 AS28573 Claro NXT Telecomunicacoes Ltda, BR
            1520 AS20115 CHARTER-20115, US
            1512 AS17622 CNCGROUP-GZ China Unicom Guangzhou network, CN
            1500 AS56041 CMNET-ZHEJIANG-AP China Mobile communications corporation, CN
            1458 AS32098 TRANSTELCO-INC, US
            1449 AS38266 VIL-AS-AP Vodafone Idea Ltd, IN
            1403 AS56046 CMNET-JIANGSU-AP China Mobile communications corporation, CN
            1360 AS6167  CELLCO-PART, US
            1341 AS45271 VIL-AS-AP Vodafone Idea Ltd, IN


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.