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Geoff Huston

Comments to: cidr-reports@potaroo.net



IPv6 CIDR REPORT for 28 Jan 26

Report Sections:


This report is generated from an analysis of the BGP routing table withinAS131072, and was produced at Wed Jan 28 11:46:51 2026 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        21-01-26    243642      119667
        22-01-26    243764      119868
        23-01-26    243820      119818
        24-01-26    243623      119846
        25-01-26    243588      119872
        26-01-26    243690      120103
        27-01-26    243796      120172
        28-01-26    243832      120172

 

AS Summary


         36109  Number of ASes in routing system
         22009  Number of ASes announcing only one prefix
          6947  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 - 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.

         --- 28Jan26 ---
        ASnum         NetsNow NetsAggr  NetGain   % Gain   Description

        Table          244567   120216   124351    50.8%   All ASes

        AS9808           6947     1380     5567    80.1%   CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
        AS7552           3975        6     3969    99.8%   VIETEL-AS-AP Viettel Group, VN
        AS18403          3592        1     3591   100.0%   FPT-AS-AP FPT Telecom Company, VN
        AS45609          3603      791     2812    78.0%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS60539          2548       21     2527    99.2%   HUICAST_TELECOM, HK
        AS16509          5352     3155     2197    41.1%   AMAZON-02 - Amazon.com, Inc., US
        AS39891          2057      139     1918    93.2%   ALJAWWALSTC-AS, SA
        AS11172          2282      560     1722    75.5%   Alestra, S. de R.L. de C.V., MX
        AS24547          1736       33     1703    98.1%   CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
        AS56041          1753      128     1625    92.7%   CMNET-ZHEJIANG-AP China Mobile communications corporation, CN
        AS12479          1523        5     1518    99.7%   UNI2-AS, ES
        AS56046          1521       61     1460    96.0%   CMNET-JIANGSU-AP China Mobile communications corporation, CN
        AS28573          1659      239     1420    85.6%   Claro NXT Telecomunicacoes Ltda, BR
        AS22773          1440       52     1388    96.4%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS32098          1728      362     1366    79.1%   TRANSTELCO-INC - Transtelco Inc, US
        AS56044          1247       24     1223    98.1%   CMNET-AS-LIAONING China Mobile communications corporation, CN
        AS47331          1272       55     1217    95.7%   TTNET, TR
        AS26611          1190       81     1109    93.2%   COMUNICACION CELULAR S.A. COMCEL S.A., CO
        AS5416           1043        3     1040    99.7%   Internet Service Provider, BH
        AS132884         1028        4     1024    99.6%   SUMMIT-BD Summit Communications Limited, BD
        AS45271          1250      271      979    78.3%   VIL-AS-AP Vodafone Idea Ltd, IN
        AS38266          1360      394      966    71.0%   VIL-AS-AP Vodafone Idea Ltd, IN
        AS62240          1104      148      956    86.6%   CLOUVIDER Clouvider - Global ASN, GB
        AS4808           1014      198      816    80.5%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS36992          1167      370      797    68.3%   ETISALAT-MISR, EG
        AS17853           785        4      781    99.5%   LGTELECOM-AS-KR LGTELECOM, KR
        AS30036          1167      478      689    59.0%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS6167           1464      823      641    43.8%   CELLCO-PART - Verizon Business, US
        AS56167           648       14      634    97.8%   PTML-PK Plot No 181-186 Street, PK
        AS11664          1188      564      624    52.5%   Techtel LMDS Comunicaciones Interactivas S.A., AR

        Total           58643    10364    48279    82.3%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            6947 AS9808  CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
            5352 AS16509 AMAZON-02 - Amazon.com, Inc., US
            3975 AS7552  VIETEL-AS-AP Viettel Group, VN
            3603 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
            3592 AS18403 FPT-AS-AP FPT Telecom Company, VN
            3054 AS13335 CLOUDFLARENET - Cloudflare, Inc., US
            2548 AS60539 HUICAST_TELECOM, HK
            2282 AS11172 Alestra, S. de R.L. de C.V., MX
            2057 AS39891 ALJAWWALSTC-AS, SA
            1753 AS56041 CMNET-ZHEJIANG-AP China Mobile communications corporation, CN
            1736 AS24547 CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
            1728 AS32098 TRANSTELCO-INC - Transtelco Inc, US
            1659 AS28573 Claro NXT Telecomunicacoes Ltda, BR
            1645 AS36183 AKAMAI-AS - Akamai Technologies, Inc., US
            1622 AS17622 CNCGROUP-GZ China Unicom Guangzhou network, CN
            1523 AS12479 UNI2-AS, ES
            1521 AS56046 CMNET-JIANGSU-AP China Mobile communications corporation, CN
            1464 AS6167  CELLCO-PART - Verizon Business, US
            1440 AS22773 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
            1409 AS17072 TOTAL PLAY TELECOMUNICACIONES SA DE CV, MX


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.