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Geoff Huston

Comments to: cidr-reports@potaroo.net



IPv6 CIDR REPORT for 23 Jul 24

Report Sections:


This report is generated from an analysis of the BGP routing table withinAS131072, and was produced at Tue Jul 23 10:46:16 2024 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        16-07-24    213321      105344
        17-07-24    213018      105438
        18-07-24    212966      104513
        19-07-24    209852      104102
        20-07-24    210165      104812
        21-07-24    209869      104252
        22-07-24    210057      104206
        23-07-24    210233      104206

 

AS Summary


         33294  Number of ASes in routing system
         20827  Number of ASes announcing only one prefix
          7092  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.

         --- 23Jul24 ---
        ASnum         NetsNow NetsAggr  NetGain   % Gain   Description

        Table          211378   104434   106944    50.6%   All ASes

        AS11172          7092      473     6619    93.3%   Alestra, S. de R.L. de C.V., MX
        AS9808           5020      472     4548    90.6%   CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
        AS7552           3042        3     3039    99.9%   VIETEL-AS-AP Viettel Group, VN
        AS18403          3839     1397     2442    63.6%   FPT-AS-AP FPT Telecom Company, VN
        AS16509          4981     2927     2054    41.2%   AMAZON-02, US
        AS45609          2806      752     2054    73.2%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS60539          2049        2     2047    99.9%   HUICAST_TELECOM, HK
        AS24547          2040      100     1940    95.1%   CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
        AS39891          1552       36     1516    97.7%   ALJAWWALSTC-AS, SA
        AS45271          1831      343     1488    81.3%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS12479          1362       77     1285    94.3%   UNI2-AS, ES
        AS22773          1306       51     1255    96.1%   ASN-CXA-ALL-CCI-22773-RDC, US
        AS28573          1484      232     1252    84.4%   Claro NXT Telecomunicacoes Ltda, BR
        AS56046          1167       29     1138    97.5%   CMNET-JIANGSU-AP China Mobile communications corporation, CN
        AS38266          1537      444     1093    71.1%   VIL-AS-AP Vodafone Idea Ltd, IN
        AS62240          1142       80     1062    93.0%   CLOUVIDER Clouvider - Global ASN, GB
        AS56044          1110       50     1060    95.5%   CMNET-AS-LIAONING China Mobile communications corporation, CN
        AS32098          1181      139     1042    88.2%   TRANSTELCO-INC, US
        AS5416           1037        7     1030    99.3%   Internet Service Provider, BH
        AS132884         1028        4     1024    99.6%   SUMMIT-BD Summit Communications Limited, BD
        AS4538           1518      504     1014    66.8%   ERX-CERNET-BKB China Education and Research Network Center, CN
        AS4808           1146      134     1012    88.3%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS56041           925       50      875    94.6%   CMNET-ZHEJIANG-AP China Mobile communications corporation, CN
        AS26611           974      201      773    79.4%   COMUNICACION CELULAR S.A. COMCEL S.A., CO
        AS17853           739       23      716    96.9%   LGTELECOM-AS-KR LGTELECOM, KR
        AS56047           720       51      669    92.9%   CMNET-HUNAN-AP China Mobile communications corporation, CN
        AS56167           648       14      634    97.8%   PTML-PK Plot No 181-186 Street, PK
        AS12025           639       43      596    93.3%   IMDC-AS12025, US
        AS4134            604       24      580    96.0%   CHINANET-BACKBONE No.31,Jin-rong Street, CN
        AS19037           689      126      563    81.7%   AMX Argentina S.A., AR

        Total           55208     8788    46420    84.1%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            7092 AS11172 Alestra, S. de R.L. de C.V., MX
            5020 AS9808  CHINAMOBILE-CN China Mobile Communications Group Co., Ltd., CN
            4981 AS16509 AMAZON-02, US
            3839 AS18403 FPT-AS-AP FPT Telecom Company, VN
            3042 AS7552  VIETEL-AS-AP Viettel Group, VN
            2806 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
            2049 AS60539 HUICAST_TELECOM, HK
            2040 AS24547 CMNET-V4HEBEI-AS-AP Hebei Mobile Communication Company Limited, CN
            1831 AS45271 ICLNET-AS-AP Idea Cellular Limited, IN
            1649 AS13335 CLOUDFLARENET, US
            1552 AS39891 ALJAWWALSTC-AS, SA
            1547 AS7545  TPG-INTERNET-AP TPG Telecom Limited, AU
            1537 AS38266 VIL-AS-AP Vodafone Idea Ltd, IN
            1526 AS17622 CNCGROUP-GZ China Unicom Guangzhou network, CN
            1518 AS4538  ERX-CERNET-BKB China Education and Research Network Center, CN
            1484 AS28573 Claro NXT Telecomunicacoes Ltda, BR
            1362 AS12479 UNI2-AS, ES
            1352 AS36183 AKAMAI-AS, US
            1306 AS22773 ASN-CXA-ALL-CCI-22773-RDC, US
            1290 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.