CircleID

At least one upstream DNS server was very "helpful" and returned IPv4 embedded in IPv6 (e.g. ::FFFF:1.2.3.4) when asked for IPv6 records…

Thus the above table is meaningless.

I've repeated the survey this time filtering fake IPv6 records and using a dump of http://www.dmoz.org/ . DMZO is a directory to verified content sites and thus far less open to "gaming" than Alexa. At least 1000 different domains per ccTLD were queried and checked if the returned TPv6 was actually reachable (TCP connect to port 80 succeeded).

As can be seen below, the actual IPv6 deployment is - apart from the Slovak Republic with 7.1%, Switzerland with 2.7% and Czech Republic with 0.6% - virtual non-existent.

IPv6 working ‰ / IPv6 broken ‰ - country
71,17 / 17,49 - Slovak Republic
26,81 / 3,19 - Switzerland
6,02 / 0,80 - Czech Republic
4,55 / 0,00 - Estonia
3,09 / 1,16 - European Union
2,79 / 0,16 - Austria
2,24 / 0,28 - Niue
1,93 / 0,39 - Portugal
1,86 / 0,72 - Norway
1,74 / 0,18 - New Zealand
1,68 / 0,42 - Finland
1,67 / 0,42 - Japan
1,44 / 0,24 - Lithuania
1,41 / 0,28 - Ireland
1,16 / 0,15 - Netherlands
1,02 / 0,20 - Greece
0,99 / 0,99 - Hungary
0,95 / 0,00 - Samoa
0,84 / 0,00 - South Africa
0,84 / 0,04 - Denmark
0,81 / 0,00 - Taiwan
0,67 / 0,28 - France
0,58 / 0,00 - Cocos
0,56 / 1,11 - United States
0,51 / 0,51 - Malaysia
0,51 / 0,51 - Tuvalu
0,46 / 0,07 - Germany
0,46 / 0,37 - Sweden
0,40 / 0,00 - United Kingdom
0,34 / 0,34 - Croatia/Hrvatska
0,34 / 0,00 - Brazil
0,30 / 0,00 - Belgium
0,25 / 0,12 - Spain
0,18 / 0,00 - Russian Federation
0,12 / 0,12 - Canada
0,11 / 0,00 - Romania
0,08 / 0,08 - Italy
0,05 / 0,14 - Poland
0,00 / 2,18 - China
0,00 / 0,68 - Ukraine
0,00 / 0,64 - Colombia
0,00 / 0,53 - Argentina
0,00 / 0,32 - Australia
0,00 / 0,20 - Chile