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Geoff Huston

Comments to: cidr-reports@potaroo.net



IPv6 CIDR REPORT for 21 Feb 20

Report Sections:


This report is generated from an analysis of the BGP routing table withinAS131072, and was produced at Fri Feb 21 04:46:02 2020 AEST.


Status Summary

Table History


        Date      Prefixes    CIDR Agg
        14-02-20     80862       46494
        15-02-20     80964       46540
        16-02-20     80934       46627
        17-02-20     81072       46553
        18-02-20     81056       46533
        19-02-20     81093       46585
        20-02-20     81112       46884
        21-02-20     81596       46884

 

AS Summary


         18988  Number of ASes in routing system
         12197  Number of ASes announcing only one prefix
          1896  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.

         --- 21Feb20 ---
        ASnum    NetsNow NetsAggr  NetGain   % Gain   Description

        Table      81644    46917    34727    42.5%   All ASes

        AS11172     1896       97     1799    94.9%   Alestra, S. de R.L. de C.V., MX
        AS12479     1424        4     1420    99.7%   UNI2-AS, ES
        AS45609     1355      255     1100    81.2%   BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
        AS28573     1193      140     1053    88.3%   CLARO S.A., BR
        AS22773     1002       24      978    97.6%   ASN-CXA-ALL-CCI-22773-RDC, US
        AS45271     1053      200      853    81.0%   ICLNET-AS-AP Idea Cellular Limited, IN
        AS7552       736        3      733    99.6%   VIETEL-AS-AP Viettel Group, VN
        AS32098      732       36      696    95.1%   TRANSTELCO-INC, US
        AS33363      661      107      554    83.8%   BHN-33363, US
        AS16509     1235      729      506    41.0%   AMAZON-02, US
        AS39891      495       11      484    97.8%   ALJAWWALSTC-AS, SA
        AS4134       501       29      472    94.2%   CHINANET-BACKBONE No.31,Jin-rong Street, CN
        AS17622      498      143      355    71.3%   CNCGROUP-GZ China Unicom Guangzhou network, CN
        AS9808       375       26      349    93.1%   CMNET-GD Guangdong Mobile Communication Co.Ltd., CN
        AS30036      549      207      342    62.3%   MEDIACOM-ENTERPRISE-BUSINESS, US
        AS13142      365       23      342    93.7%   MOBIFONE-AS-VN MOBIFONE Corporation, VN
        AS8376       615      279      336    54.6%   Jordan Data Communications, JO
        AS9829       462      175      287    62.1%   BSNL-NIB National Internet Backbone, IN
        AS38266      413      134      279    67.6%   VODAFONE-IN Vodafone India Ltd., IN
        AS3462       268        6      262    97.8%   HINET Data Communication Business Group, TW
        AS9605       271       14      257    94.8%   DOCOMO NTT DOCOMO, INC., JP
        AS55303      310       53      257    82.9%   EAGLENET-AP 60 Market Square,P.O. Box 364, PH
        AS13206      258        1      257    99.6%   REALMOVE-AS-AP Realmove Company Limited, TH
        AS17552      316       60      256    81.0%   TRUE-AS-AP True Internet Co.,Ltd., TH
        AS24173      258        3      255    98.8%   NETNAM-AS-AP Netnam Company, VN
        AS13361      306       65      241    78.8%   VODAFONE-AS-AP Vodafone Australia Pty Ltd, AU
        AS24158      239        2      237    99.2%   TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
        AS174        332      113      219    66.0%   COGENT-174, US
        AS4808       234       33      201    85.9%   CHINA169-BJ China Unicom Beijing Province Network, CN
        AS22394      721      521      200    27.7%   CELLCO, US

        Total      19073     3493    15580    81.7%   Top 30 total


        Top 20 Route Count per Originating AS
        Prefixes ASnum   AS Description
            1896 AS11172 Alestra, S. de R.L. de C.V., MX
            1424 AS12479 UNI2-AS, ES
            1355 AS45609 BHARTI-MOBILITY-AS-AP Bharti Airtel Ltd. AS for GPRS Service, IN
            1235 AS16509 AMAZON-02, US
            1193 AS28573 CLARO S.A., BR
            1053 AS45271 ICLNET-AS-AP Idea Cellular Limited, IN
            1002 AS22773 ASN-CXA-ALL-CCI-22773-RDC, US
             760 AS54113 FASTLY, US
             745 AS13335 CLOUDFLARENET, US
             736 AS7552  VIETEL-AS-AP Viettel Group, VN
             732 AS32098 TRANSTELCO-INC, US
             721 AS22394 CELLCO, US
             661 AS33363 BHN-33363, US
             615 AS8376  Jordan Data Communications, JO
             594 AS20940 AKAMAI-ASN1, US
             549 AS30036 MEDIACOM-ENTERPRISE-BUSINESS, US
             501 AS4134  CHINANET-BACKBONE No.31,Jin-rong Street, CN
             498 AS17622 CNCGROUP-GZ China Unicom Guangzhou network, CN
             495 AS39891 ALJAWWALSTC-AS, SA
             469 AS19551 INCAPSULA, 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.