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Geoff Huston

Comments to: cidr-reports@potaroo.net



IPv6 CIDR REPORT for 2 Dec 23

Report Sections:


This report is generated from an analysis of the BGP routing table withinAS131072, and was produced at Sat Dec 2 11:46:10 2023 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        25-11-23    200956       96659
        26-11-23    201038       96585
        27-11-23    200924       96713
        28-11-23    201375       96858
        29-11-23    201450       96779
        30-11-23    201357       97504
        01-12-23    200524       97853
        02-12-23    200620       97853

 

AS Summary


         32424  Number of ASes in routing system
         20374  Number of ASes announcing only one prefix
          6255  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.

         --- 02Dec23 ---
        ASnum         NetsNow NetsAggr  NetGain   % Gain   Description

        Table          200707    98009   102698    51.2%   All ASes

        AS11172          6255      828     5427    86.8%   Alestra, S. de R.L. de C.V., MX
        AS9808           4655      371     4284    92.0%   CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
        AS18403          4289       49     4240    98.9%   FPT-AS-AP FPT Telecom Company, VN
        AS7552           2544        5     2539    99.8%   VIETEL-AS-AP Viettel Group, VN
        AS45609          2540      424     2116    83.3%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS24547          2018       20     1998    99.0%   CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
        AS16509          4337     2430     1907    44.0%   AMAZON-02, US
        AS12479          1647       32     1615    98.1%   UNI2-AS, ES
        AS45271          1838      229     1609    87.5%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS32098          1515      184     1331    87.9%   TRANSTELCO-INC, US
        AS39891          1337       63     1274    95.3%   ALJAWWALSTC-AS, SA
        AS28573          1459      224     1235    84.6%   Claro NXT Telecomunicacoes Ltda, BR
        AS56046          1146       18     1128    98.4%   CMNET-JIANGSU-AP China Mobile communications corporation, CN
        AS22773          1280      163     1117    87.3%   ASN-CXA-ALL-CCI-22773-RDC, US
        AS62240          1137       65     1072    94.3%   CLOUVIDER Clouvider - Global ASN, GB
        AS38266          1457      422     1035    71.0%   VIL-AS-AP Vodafone Idea Ltd, IN
        AS5416           1036        6     1030    99.4%   Internet Service Provider, BH
        AS38496          1067       43     1024    96.0%   CNI-AS-ID PT Cyber Network Indonesia, ID
        AS56044           980       19      961    98.1%   CMNET-AS-LIAONING China Mobile communications corporation, CN
        AS4808           1050      129      921    87.7%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS4538            991      300      691    69.7%   ERX-CERNET-BKB China Education and Research Network Center, CN
        AS20115          1161      478      683    58.8%   CHARTER-20115, US
        AS56047           719       46      673    93.6%   CMNET-HUNAN-AP China Mobile communications corporation, CN
        AS17853           660        4      656    99.4%   LGTELECOM-AS-KR LGTELECOM, KR
        AS56167           616       12      604    98.1%   PTML-PK Plot No 181-186 Street, PK
        AS17072          1311      710      601    45.8%   TOTAL PLAY TELECOMUNICACIONES SA DE CV, MX
        AS4134            605       26      579    95.7%   CHINANET-BACKBONE No.31,Jin-rong Street, CN
        AS26611           618       44      574    92.9%   COMUNICACION CELULAR S.A. COMCEL S.A., CO
        AS12025           576       37      539    93.6%   IMDC-AS12025, US
        AS131429          616       79      537    87.2%   MOBIFONE-AS-VN MOBIFONE Corporation, VN

        Total           51460     7460    44000    85.5%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            6255 AS11172 Alestra, S. de R.L. de C.V., MX
            4655 AS9808  CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
            4337 AS16509 AMAZON-02, US
            4289 AS18403 FPT-AS-AP FPT Telecom Company, VN
            2544 AS7552  VIETEL-AS-AP Viettel Group, VN
            2540 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
            2018 AS24547 CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
            1838 AS45271 ICLNET-AS-AP Idea Cellular Limited, IN
            1647 AS12479 UNI2-AS, ES
            1533 AS17622 CNCGROUP-GZ China Unicom Guangzhou network, CN
            1515 AS32098 TRANSTELCO-INC, US
            1459 AS28573 Claro NXT Telecomunicacoes Ltda, BR
            1457 AS7545  TPG-INTERNET-AP TPG Telecom Limited, AU
            1457 AS38266 VIL-AS-AP Vodafone Idea Ltd, IN
            1392 AS36183 AKAMAI-AS, US
            1337 AS39891 ALJAWWALSTC-AS, SA
            1336 AS13335 CLOUDFLARENET, US
            1311 AS17072 TOTAL PLAY TELECOMUNICACIONES SA DE CV, MX
            1280 AS22773 ASN-CXA-ALL-CCI-22773-RDC, US
            1161 AS20115 CHARTER-20115, 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.