Home    BGP Reports    CIDR Reports   IPv4 Reports   IPv6 Reports    IETF Docs  

Geoff Huston

Comments to: cidr-reports@potaroo.net



IPv6 CIDR REPORT for 8 Dec 22

Report Sections:


This report is generated from an analysis of the BGP routing table withinAS131072, and was produced at Thu Dec 8 05:46:34 2022 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        01-12-22    167851       86382
        02-12-22    167991       86479
        03-12-22    167896       86995
        04-12-22    170278       87260
        05-12-22    170415       87173
        06-12-22    170425       87483
        07-12-22    170601       87322
        08-12-22    170636       87322

 

AS Summary


         30244  Number of ASes in routing system
         19386  Number of ASes announcing only one prefix
          4097  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.

         --- 08Dec22 ---
        ASnum         NetsNow NetsAggr  NetGain   % Gain   Description

        Table          170642    87282    83360    48.9%   All ASes

        AS9808           3903      316     3587    91.9%   CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
        AS11172          4097      581     3516    85.8%   Alestra, S. de R.L. de C.V., MX
        AS7552           2158        4     2154    99.8%   VIETEL-AS-AP Viettel Group, VN
        AS45609          2381      487     1894    79.5%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS24547          1808       16     1792    99.1%   CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
        AS45271          1877      229     1648    87.8%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS12479          1622       60     1562    96.3%   UNI2-AS, ES
        AS28573          1697      206     1491    87.9%   Claro NXT Telecomunicacoes Ltda, BR
        AS16509          2828     1581     1247    44.1%   AMAZON-02, US
        AS62240          1249       68     1181    94.6%   CLOUVIDER Clouvider - Global ASN, GB
        AS22773          1309      163     1146    87.5%   ASN-CXA-ALL-CCI-22773-RDC, US
        AS32098          1269      139     1130    89.0%   TRANSTELCO-INC, US
        AS39891          1295      192     1103    85.2%   ALJAWWALSTC-AS, SA
        AS17622          2337     1240     1097    46.9%   CNCGROUP-GZ China Unicom Guangzhou network, CN
        AS56046          1124       38     1086    96.6%   CMNET-JIANGSU-AP China Mobile communications corporation, CN
        AS17623          1473      426     1047    71.1%   CNCGROUP-SZ China Unicom Shenzen network, CN
        AS56044           970       11      959    98.9%   CMNET-AS-LIAONING China Mobile communications corporation, CN
        AS38266          1191      301      890    74.7%   VODAFONE-IN Vodafone India Ltd., IN
        AS4808            910      116      794    87.3%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS23674           776        6      770    99.2%   NAYATEL-PK Nayatel Pvt Ltd, PK
        AS20115          1203      467      736    61.2%   CHARTER-20115, US
        AS56047           716       43      673    94.0%   CMNET-HUNAN-AP China Mobile communications corporation, CN
        AS11664           589        7      582    98.8%   Techtel LMDS Comunicaciones Interactivas S.A., AR
        AS4134            606       26      580    95.7%   CHINANET-BACKBONE No.31,Jin-rong Street, CN
        AS18403           739      201      538    72.8%   FPT-AS-AP FPT Telecom Company, VN
        AS17853           475       14      461    97.1%   LGTELECOM-AS-KR LGTELECOM, KR
        AS30036           647      203      444    68.6%   MEDIACOM-ENTERPRISE-BUSINESS, US
        AS17552           419        9      410    97.9%   TRUEONLINE-AS-AP True Online, TH
        AS131429          486       89      397    81.7%   MOBIFONE-AS-VN MOBIFONE Corporation, VN
        AS133612          499      102      397    79.6%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU

        Total           42653     7341    35312    82.8%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            4097 AS11172 Alestra, S. de R.L. de C.V., MX
            3903 AS9808  CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
            2828 AS16509 AMAZON-02, US
            2381 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
            2337 AS17622 CNCGROUP-GZ China Unicom Guangzhou network, CN
            2158 AS7552  VIETEL-AS-AP Viettel Group, VN
            1877 AS45271 ICLNET-AS-AP Idea Cellular Limited, IN
            1808 AS24547 CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
            1697 AS28573 Claro NXT Telecomunicacoes Ltda, BR
            1622 AS12479 UNI2-AS, ES
            1473 AS17623 CNCGROUP-SZ China Unicom Shenzen network, CN
            1359 AS36183 AKAMAI-AS, US
            1309 AS22773 ASN-CXA-ALL-CCI-22773-RDC, US
            1295 AS39891 ALJAWWALSTC-AS, SA
            1269 AS32098 TRANSTELCO-INC, US
            1249 AS62240 CLOUVIDER Clouvider - Global ASN, GB
            1203 AS20115 CHARTER-20115, US
            1191 AS38266 VODAFONE-IN Vodafone India Ltd., IN
            1124 AS56046 CMNET-JIANGSU-AP China Mobile communications corporation, CN
            1111 AS13335 CLOUDFLARENET, 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.