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Geoff Huston

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IPv6 CIDR REPORT for 21 Sep 19

Report Sections:


This report is generated from an analysis of the BGP routing table withinAS131072, and was produced at Sat Sep 21 03:47:27 2019 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        14-09-19     75640       43646
        15-09-19     75734       43664
        16-09-19     75747       43774
        17-09-19     75802       43722
        18-09-19     75809       43740
        19-09-19     75860       43835
        20-09-19     76059       44196
        21-09-19     76563       44196

 

AS Summary


         18017  Number of ASes in routing system
         11620  Number of ASes announcing only one prefix
          1501  Largest number of prefixes announced by an AS
                AS8376 : Jordan Data Communications, JO
      281727306039296 (/16.00) Largest address span announced by an AS (/64s)
                AS268976: 


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.

         --- 21Sep19 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      76562    44221    32341    42.2%   All ASes

        AS11172     1380       72     1308    94.8%   Alestra, S. de R.L. de C.V., MX
        AS12479     1271        5     1266    99.6%   UNI2-AS, ES
        AS28573     1100      119      981    89.2%   CLARO S.A., BR
        AS8376      1501      625      876    58.4%   Jordan Data Communications, JO
        AS45609      971      132      839    86.4%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS22773      992      277      715    72.1%   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
        AS7552       658        6      652    99.1%   VIETEL-AS-AP Viettel Group, VN
        AS30036      899      330      569    63.3%   MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
        AS32098      695      178      517    74.4%   TRANSTELCO-INC - Transtelco Inc, US
        AS45271      655      151      504    76.9%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS16509     1135      632      503    44.3%   AMAZON-02 - Amazon.com, Inc., US
        AS4134       501       29      472    94.2%   CHINANET-BACKBONE No.31,Jin-rong Street, CN
        AS33363      673      225      448    66.6%   BHN-33363 - Charter Communications, Inc, US
        AS52300      728      283      445    61.1%   Internet Local, AR
        AS26659      428        1      427    99.8%   Ceriluz Provedores de Internet Ltda., BR
        AS13361      606      185      421    69.5%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS17622      499      141      358    71.7%   CNCGROUP-GZ China Unicom Guangzhou network, CN
        AS9829       458      104      354    77.3%   BSNL-NIB National Internet Backbone, IN
        AS9808       362       32      330    91.2%   CMNET-GD Guangdong Mobile Communication Co.Ltd., CN
        AS13142      339       21      318    93.8%   MOBIFONE-AS-VN MOBIFONE Corporation, VN
        AS8151       359       79      280    78.0%   Uninet S.A. de C.V., MX
        AS9605       271       13      258    95.2%   DOCOMO NTT DOCOMO, INC., JP
        AS13206      258        1      257    99.6%   REALMOVE-AS-AP Realmove Company Limited, TH
        AS24173      258        3      255    98.8%   NETNAM-AS-AP Netnam Company, VN
        AS55430      291       38      253    86.9%   STARHUB-NGNBN Starhub Ltd, SG
        AS54113      652      422      230    35.3%   FASTLY - Fastly, US
        AS174        324       99      225    69.4%   COGENT-174 - Cogent Communications, US
        AS3462       267       55      212    79.4%   HINET Data Communication Business Group, TW
        AS17552      248       43      205    82.7%   TRUE-AS-AP True Internet Co.,Ltd., TH
        AS4808       231       33      198    85.7%   CHINA169-BJ China Unicom Beijing Province Network, CN

        Total      19010     4334    14676    77.2%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            1501 AS8376  Jordan Data Communications, JO
            1380 AS11172 Alestra, S. de R.L. de C.V., MX
            1271 AS12479 UNI2-AS, ES
            1135 AS16509 AMAZON-02 - Amazon.com, Inc., US
            1100 AS28573 CLARO S.A., BR
             992 AS22773 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US
             971 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
             899 AS30036 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US
             728 AS52300 Internet Local, AR
             695 AS32098 TRANSTELCO-INC - Transtelco Inc, US
             679 AS13335 CLOUDFLARENET - Cloudflare, Inc., US
             677 AS22394 CELLCO - Cellco Partnership DBA Verizon Wireless, US
             673 AS33363 BHN-33363 - Charter Communications, Inc, US
             658 AS7552  VIETEL-AS-AP Viettel Group, VN
             655 AS45271 ICLNET-AS-AP Idea Cellular Limited, IN
             652 AS54113 FASTLY - Fastly, US
             606 AS133612 VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
             551 AS20940 AKAMAI-ASN1, US
             501 AS4134  CHINANET-BACKBONE No.31,Jin-rong Street, CN
             499 AS17622 CNCGROUP-GZ China Unicom Guangzhou network, 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.