Home    BGP Reports    CIDR Reports   IPv4 Reports   IPv6 Reports    IETF Docs  

Geoff Huston

Comments to: cidr-reports@potaroo.net



IPv6 CIDR REPORT for 7 Sep 25

Report Sections:


This report is generated from an analysis of the BGP routing table withinAS131072, and was produced at Sun Sep 7 18:46:41 2025 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        31-08-25    233484      117128
        01-09-25    233620      117058
        02-09-25    233821      117085
        03-09-25    233874      117023
        04-09-25    233895      117655
        05-09-25    234291      117515
        06-09-25    234298      116623
        07-09-25    234401      116623

 

AS Summary


         35581  Number of ASes in routing system
         21680  Number of ASes announcing only one prefix
          6873  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.

         --- 07Sep25 ---
        ASnum         NetsNow NetsAggr  NetGain   % Gain   Description

        Table          234482   116792   117690    50.2%   All ASes

        AS9808           6873      862     6011    87.5%   CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
        AS7552           3973        6     3967    99.8%   VIETEL-AS-AP Viettel Group, VN
        AS45609          3513      733     2780    79.1%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS16509          5399     2993     2406    44.6%   AMAZON-02, US
        AS18403          3461     1269     2192    63.3%   FPT-AS-AP FPT Telecom Company, VN
        AS60539          2035        9     2026    99.6%   HUICAST_TELECOM, HK
        AS11172          2605      601     2004    76.9%   Alestra, S. de R.L. de C.V., MX
        AS39891          2136      215     1921    89.9%   ALJAWWALSTC-AS, SA
        AS24547          1734       32     1702    98.2%   CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
        AS32098          1528      110     1418    92.8%   TRANSTELCO-INC, US
        AS22773          1458       55     1403    96.2%   ASN-CXA-ALL-CCI-22773-RDC, US
        AS56041          1515      117     1398    92.3%   CMNET-ZHEJIANG-AP China Mobile communications corporation, CN
        AS12479          1401        4     1397    99.7%   UNI2-AS, ES
        AS56046          1416       56     1360    96.0%   CMNET-JIANGSU-AP China Mobile communications corporation, CN
        AS28573          1566      237     1329    84.9%   Claro NXT Telecomunicacoes Ltda, BR
        AS56044          1247       22     1225    98.2%   CMNET-AS-LIAONING China Mobile communications corporation, CN
        AS47331          1250       61     1189    95.1%   TTNET, TR
        AS26611          1196      144     1052    88.0%   COMUNICACION CELULAR S.A. COMCEL S.A., CO
        AS45271          1311      271     1040    79.3%   VIL-AS-AP Vodafone Idea Ltd, IN
        AS5416           1041       10     1031    99.0%   Internet Service Provider, BH
        AS132884         1028        4     1024    99.6%   SUMMIT-BD Summit Communications Limited, BD
        AS62240          1093      130      963    88.1%   CLOUVIDER Clouvider - Global ASN, GB
        AS4808           1121      185      936    83.5%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS38266          1357      423      934    68.8%   VIL-AS-AP Vodafone Idea Ltd, IN
        AS17853           787        4      783    99.5%   LGTELECOM-AS-KR LGTELECOM, KR
        AS56167           648       14      634    97.8%   PTML-PK Plot No 181-186 Street, PK
        AS12025           652       40      612    93.9%   IMDC-AS12025, US
        AS137409         1100      489      611    55.5%   GSLNETWORKS-AS-AP GSL Networks Pty LTD, AU
        AS4134            619       38      581    93.9%   CHINANET-BACKBONE No.31,Jin-rong Street, CN
        AS56047           728      149      579    79.5%   CMNET-HUNAN-AP China Mobile communications corporation, CN

        Total           55791     9283    46508    83.4%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            6873 AS9808  CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
            5399 AS16509 AMAZON-02, US
            3973 AS7552  VIETEL-AS-AP Viettel Group, VN
            3513 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
            3461 AS18403 FPT-AS-AP FPT Telecom Company, VN
            2934 AS13335 CLOUDFLARENET, US
            2605 AS11172 Alestra, S. de R.L. de C.V., MX
            2136 AS39891 ALJAWWALSTC-AS, SA
            2035 AS60539 HUICAST_TELECOM, HK
            1734 AS24547 CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
            1691 AS20115 CHARTER-20115, US
            1642 AS36183 AKAMAI-AS, US
            1566 AS28573 Claro NXT Telecomunicacoes Ltda, BR
            1528 AS32098 TRANSTELCO-INC, US
            1525 AS17622 CNCGROUP-GZ China Unicom Guangzhou network, CN
            1515 AS56041 CMNET-ZHEJIANG-AP China Mobile communications corporation, CN
            1458 AS22773 ASN-CXA-ALL-CCI-22773-RDC, US
            1449 AS6167  CELLCO-PART, US
            1416 AS56046 CMNET-JIANGSU-AP China Mobile communications corporation, CN
            1401 AS12479 UNI2-AS, ES


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.