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Geoff Huston

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IPv6 CIDR REPORT for 8 Dec 24

Report Sections:


This report is generated from an analysis of the BGP routing table withinAS131072, and was produced at Sun Dec 8 08:46:35 2024 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        01-12-24    220926      110014
        02-12-24    221118      109959
        03-12-24    221110      110122
        04-12-24    221229      109753
        05-12-24    220549      110104
        06-12-24    221329      110280
        07-12-24    221443      110285
        08-12-24    221320      110285

 

AS Summary


         34280  Number of ASes in routing system
         21132  Number of ASes announcing only one prefix
          6174  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.

         --- 08Dec24 ---
        ASnum         NetsNow NetsAggr  NetGain   % Gain   Description

        Table          221343   110285   111058    50.2%   All ASes

        AS11172          6174      754     5420    87.8%   Alestra, S. de R.L. de C.V., MX
        AS9808           5217     1231     3986    76.4%   CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
        AS7552           3157        5     3152    99.8%   VIETEL-AS-AP Viettel Group, VN
        AS60539          2562       15     2547    99.4%   HUICAST_TELECOM, HK
        AS45609          3050      561     2489    81.6%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS18403          3749     1405     2344    62.5%   FPT-AS-AP FPT Telecom Company, VN
        AS16509          5318     3104     2214    41.6%   AMAZON-02, US
        AS24547          1885       84     1801    95.5%   CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
        AS39891          1890      170     1720    91.0%   ALJAWWALSTC-AS, SA
        AS45271          1674      293     1381    82.5%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS12479          1459      102     1357    93.0%   UNI2-AS, ES
        AS28573          1553      233     1320    85.0%   Claro NXT Telecomunicacoes Ltda, BR
        AS22773          1300       50     1250    96.2%   ASN-CXA-ALL-CCI-22773-RDC, US
        AS56046          1216       57     1159    95.3%   CMNET-JIANGSU-AP China Mobile communications corporation, CN
        AS32098          1342      184     1158    86.3%   TRANSTELCO-INC, US
        AS47331          1190       71     1119    94.0%   TTNET, TR
        AS56044          1113       22     1091    98.0%   CMNET-AS-LIAONING China Mobile communications corporation, CN
        AS62240          1148       87     1061    92.4%   CLOUVIDER Clouvider - Global ASN, GB
        AS56041          1155       96     1059    91.7%   CMNET-ZHEJIANG-AP China Mobile communications corporation, CN
        AS5416           1037        7     1030    99.3%   Internet Service Provider, BH
        AS132884         1028        4     1024    99.6%   SUMMIT-BD Summit Communications Limited, BD
        AS4808           1170      181      989    84.5%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS38266          1381      457      924    66.9%   VIL-AS-AP Vodafone Idea Ltd, IN
        AS30036          1023      302      721    70.5%   MEDIACOM-ENTERPRISE-BUSINESS, US
        AS17853           739       29      710    96.1%   LGTELECOM-AS-KR LGTELECOM, KR
        AS26611           751       56      695    92.5%   COMUNICACION CELULAR S.A. COMCEL S.A., CO
        AS8881            715       22      693    96.9%   VERSATEL, DE
        AS56167           648       14      634    97.8%   PTML-PK Plot No 181-186 Street, PK
        AS12025           637       35      602    94.5%   IMDC-AS12025, US
        AS4134            615       35      580    94.3%   CHINANET-BACKBONE No.31,Jin-rong Street, CN

        Total           55896     9666    46230    82.7%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            6174 AS11172 Alestra, S. de R.L. de C.V., MX
            5318 AS16509 AMAZON-02, US
            5217 AS9808  CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
            3749 AS18403 FPT-AS-AP FPT Telecom Company, VN
            3157 AS7552  VIETEL-AS-AP Viettel Group, VN
            3050 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
            2562 AS60539 HUICAST_TELECOM, HK
            1890 AS39891 ALJAWWALSTC-AS, SA
            1885 AS24547 CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
            1759 AS13335 CLOUDFLARENET, US
            1674 AS45271 ICLNET-AS-AP Idea Cellular Limited, IN
            1593 AS36183 AKAMAI-AS, US
            1553 AS28573 Claro NXT Telecomunicacoes Ltda, BR
            1526 AS17622 CNCGROUP-GZ China Unicom Guangzhou network, CN
            1459 AS12479 UNI2-AS, ES
            1381 AS38266 VIL-AS-AP Vodafone Idea Ltd, IN
            1342 AS32098 TRANSTELCO-INC, US
            1300 AS17072 TOTAL PLAY TELECOMUNICACIONES SA DE CV, MX
            1300 AS22773 ASN-CXA-ALL-CCI-22773-RDC, US
            1216 AS56046 CMNET-JIANGSU-AP China Mobile communications corporation, CN


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.