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Geoff Huston

Comments to: cidr-reports@potaroo.net



IPv6 CIDR REPORT for 12 May 26

Report Sections:


This report is generated from an analysis of the BGP routing table withinAS131072, and was produced at Tue May 12 13:46:48 2026 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        05-05-26    249822      124372
        06-05-26    249760      124634
        07-05-26    249850      125191
        08-05-26    250207      125107
        09-05-26    250281      125043
        10-05-26    250008      125309
        11-05-26    250497      125282
        12-05-26    250608      125282

 

AS Summary


         36713  Number of ASes in routing system
         22243  Number of ASes announcing only one prefix
          7096  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.

         --- 12May26 ---
        ASnum         NetsNow NetsAggr  NetGain   % Gain   Description

        Table          251152   125584   125568    50.0%   All ASes

        AS9808           7096      668     6428    90.6%   CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
        AS7552           4016        6     4010    99.9%   VIETEL-AS-AP Viettel Group, VN
        AS18403          3472        1     3471   100.0%   FPT-AS-AP FPT Telecom Company, VN
        AS45609          3530      846     2684    76.0%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS16509          5600     3328     2272    40.6%   AMAZON-02 - Amazon.com, Inc., US
        AS39891          2075      109     1966    94.7%   ALJAWWALSTC-AS, SA
        AS56041          1892       39     1853    97.9%   CMNET-ZHEJIANG-AP China Mobile communications corporation, CN
        AS32098          1894       80     1814    95.8%   TRANSTELCO-INC - Transtelco Inc, US
        AS24547          1745       43     1702    97.5%   CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
        AS11172          2512      823     1689    67.2%   Alestra, S. de R.L. de C.V., MX
        AS56046          1553       43     1510    97.2%   CMNET-JIANGSU-AP China Mobile communications corporation, CN
        AS28573          1665      239     1426    85.6%   Claro NXT Telecomunicacoes Ltda, BR
        AS22773          1454       52     1402    96.4%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS56044          1253       24     1229    98.1%   CMNET-AS-LIAONING China Mobile communications corporation, CN
        AS47331          1272       68     1204    94.7%   TTNET, TR
        AS26611          1185       77     1108    93.5%   COMUNICACION CELULAR S.A. COMCEL S.A., CO
        AS36992          1471      376     1095    74.4%   ETISALAT-MISR, EG
        AS5416           1054       15     1039    98.6%   Internet Service Provider, BH
        AS62240          1111      149      962    86.6%   CLOUVIDER Clouvider - Global ASN, GB
        AS38266          1311      424      887    67.7%   VIL-AS-AP Vodafone Idea Ltd, IN
        AS12479          1551      677      874    56.4%   UNI2-AS, ES
        AS4808           1017      161      856    84.2%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS17853           849       17      832    98.0%   LGTELECOM-AS-KR LGTELECOM, KR
        AS45271          1044      243      801    76.7%   VIL-AS-AP Vodafone Idea Ltd, IN
        AS20115          2157     1410      747    34.6%   CHARTER-20115 - Charter Communications LLC, US
        AS11664          1292      605      687    53.2%   Techtel LMDS Comunicaciones Interactivas S.A., AR
        AS9829            964      280      684    71.0%   BSNL-NIB National Internet Backbone, IN
        AS56047           733       62      671    91.5%   CMNET-HUNAN-AP China Mobile communications corporation, CN
        AS25019           916      255      661    72.2%   SAUDINETSTC-AS, SA
        AS56167           648       14      634    97.8%   PTML-PK Plot No 181-186 Street, PK

        Total           58332    11134    47198    80.9%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            7096 AS9808  CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
            5600 AS16509 AMAZON-02 - Amazon.com, Inc., US
            4016 AS7552  VIETEL-AS-AP Viettel Group, VN
            3530 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
            3472 AS18403 FPT-AS-AP FPT Telecom Company, VN
            2948 AS13335 CLOUDFLARENET - Cloudflare, Inc., US
            2512 AS11172 Alestra, S. de R.L. de C.V., MX
            2157 AS20115 CHARTER-20115 - Charter Communications LLC, US
            2075 AS39891 ALJAWWALSTC-AS, SA
            1968 AS17622 CNCGROUP-GZ China Unicom Guangzhou network, CN
            1894 AS32098 TRANSTELCO-INC - Transtelco Inc, US
            1892 AS56041 CMNET-ZHEJIANG-AP China Mobile communications corporation, CN
            1745 AS24547 CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
            1665 AS28573 Claro NXT Telecomunicacoes Ltda, BR
            1647 AS36183 AKAMAI-AS - Akamai Technologies, Inc., US
            1639 AS6167  CELLCO-PART - Verizon Business, US
            1553 AS56046 CMNET-JIANGSU-AP China Mobile communications corporation, CN
            1551 AS12479 UNI2-AS, ES
            1471 AS36992 ETISALAT-MISR, EG
            1454 AS22773 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 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.