IPv6 report at tronche.com for April 2011 is out.

A little of a surprise, at least for me, is that, although China consistently shows up in the various top 10 of the report, and APNIC has been out of IPv4 addresses this month, RIPE seems actually to be leading adoption, be it by hit number, number of distinct addresses or number of distinct networks seen. This is quite clear on this graphics.

Although adoption is very slow, I take as a good sign that, for the first time, the number of distinct IPv6 networks seen was above 100 for two months in a row.

The report

*** 2011 Apr ***
ipv4 = 16432    ipv6 = 280      ratio = 1.704   #ipv6 network = 106
By hits ipv4 = 222342 ipv6 = 6703 ratio = 3.015

Top 10 networks by hit number :
Hits    Entity
2063    Tsinghua University
951     LDCOM
924     Google Incorporated
663     China Next Generation Internet CERNET2
256     Hurricane Electric, Inc.
166     SixXS assignment to end-user GSP3-SIXXS
158     Comcast Cable Communications, Inc.
129     6to4
123     Free SAS
93      Psychz Networks

Top 10 networks by #of distinct IPv6 :
#       Network
33      Google Incorporated
29      Hurricane Electric, Inc.
22      Free SAS
18      LDCOM
18      China Next Generation Internet CERNET2
12      6to4
7       Teredo
6       Peking University
4       Univerza v Ljubljani
4       Tsinghua University

Top 10 countries by hit number :
Hits    Country
2849    CN
1658    US
1157    FR
166     MT
160     XX
124     NL
116     DE
100     AT
72      SE
53      GB

Top 10 countries by #of IPv6 network :
#       Country
17      US
15      DE
12      FR
8       NL
7       CN
4       CZ
4       GB
4       SE
4       AT
3       FI

RIR by hit :
Hits    RIR
2890    APNIC
1984    RIPE
1825    ARIN
2       LACNIC

RIR by #distinct networks :
#       RIR
69      RIPE
21      ARIN
15      APNIC
1       LACNIC

RIR by #distinct @IP :
#        RIR
122     RIPE
109     ARIN
47      APNIC
1       LACNIC