Ratio of IPv4 and IPv6 hosts

By using a specific trick (collecting IPv6 statistics about clients of some specific web servers), we counted 58 hosts (since midnight UTC):

51 IPv4 only hosts;
3 dual stack hosts where IPv6 is preferred (like Windows XP & Linux) or IPv6 only hosts;
4 dual stack hosts where IPv4 is preferred (like Windows Vista);

Therefore 12.07% of Internet hosts are IPv6 enabled (not counting hosts with IPv6 enabled but without good IPv6 connectivity):

3 host(s) with native IPv6 connectivity;
2 host(s) using 6to4 tunnels (including 0 routers/home gateways);
0 host(s) using ISATAP tunnels;
2 host(s) using Teredo tunnels;
0 Freebox(es).

Browsers and Operating Systems

Statistics about Mac OS X visitors (or do you want any type of addresses, only IPv4 or only IPv6 or only IPv6-preferred or only IPv4-preferred dual-stack or only Freebox IPv6 or only 6to4 IPv6 or only Teredo IPv6 or addresses? Or do you want only Windows XP or Windows Vista or Windows 7 or Mac OS X machines?

Operating System	Count
Mac OS X	15

Browser	Count
Apple Safari	8
Firefox	4
Google Chrome	3

Country	Count
	3
	2
	2
	2
??	2
	1
	1
	1
	1

Teredo Servers

Frequency	IPv4 Address of Teredo Server
1	65.55.158.118 (65.55.158.118)
1	65.55.158.116 (65.55.158.116)

The last 10 accesses

Date	IPv4	IPv6	Referer	User Agent
2010-09-08 02:10:19	68.196...		http://web.nickshanks.com/fonts/kannada/	Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
2010-09-08 02:06:40	67.71....	2001:0:4137:9e74...	http://web.nickshanks.com/code/js/cams	Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8 ( .NET CLR 3.5.30729)
2010-09-08 02:05:13	67.197...		http://web.nickshanks.com/history/anglo-saxon	Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET CLR
2010-09-08 02:04:24	78.133...		http://web.nickshanks.com/fonts/kannada/	Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) AppleWebKit/533.16 (KHTML, like Gecko) Version/5.0 Safari/533.16
2010-09-08 02:04:20	Native	2001:418:3804:1:...	http://ovh.vyncke.org/ipv6challenge/?installed=1&session=%7B%22session_key%22%3A%222.MU50JvRBottTb1f	Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_0_2 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Mobile/8A400
2010-09-08 02:02:27	75.95....		http://web.nickshanks.com/history/anglo-saxon	Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.127 Safari/533.4
2010-09-08 02:02:01	67.136...		http://web.nickshanks.com/history/sixthousandyears/	Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
2010-09-08 02:00:45	Native	2001:980:42a3:1:...	http://www.vyncke.org/countv6/stats.php	Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_0_1 like Mac OS X; nl-nl) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8A3
2010-09-08 01:59:33	93.12....		http://pierre.vyncke.org/vanhool_manager/top.php	Mozilla/5.0 (Windows; U; Windows NT 6.0; fr; rv:1.9.2.6) Gecko/20100625 Firefox/3.6.6 ( .NET CLR 3.5.30729; .NET4.0C)
2010-09-08 01:58:08	98.109...		http://sigma.hec.be/~evyncke/family/countv6/image4.php	Mozilla/4.0 (compatible; MSIE 4.5; Mac_PowerPC)

The last 10 IPv6 accesses Mac OS X visitors

If an IPv4 address is displayed, this means that the host preferred to use IPv4 vs. IPv6; IPv6 is used only when it was redirected to http://[2001:...]/...

Date	IPv4	IPv6	Referer	User Agent
2010-09-08 00:41:58	Native	2001:55c:43ae:e5...	http://ovh.vyncke.org/ipv6challenge/?ref=bookmarks&fb_sig_in_iframe=1&fb_sig_locale=en_US&fb_sig_in_	Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) AppleWebKit/533.17.8 (KHTML, like Gecko) Version/5.0.1 Safari/533.17.8
2010-09-07 22:41:03	68.163...	2002:44a3:88a1:0... 6to4 Router	http://www.koopman.me/2008/01/nusoap-wsdl-service-return-array-of-complex-data/	Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
2010-09-07 14:29:51	198.82...	2001:468:c80:434...	http://www.vyncke.org/ipv6status/index.php	Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) AppleWebKit/533.17.8 (KHTML, like Gecko) Version/5.0.1 Safari/533.17.8
2010-09-07 13:43:23	6to4	2002:3a98:8b93:0... 6to4 Router	http://web.nickshanks.com/history/anglo-saxon	Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_8; en-US) AppleWebKit/534.3 (KHTML, like Gecko) Chrome/6.0.472.53 Safari/534.3
2010-09-07 12:41:05	77.109...	2001:6f8:1468:10...	http://www.ipv6council.be/?lang=nl	Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.11) Gecko/20100701 Firefox/3.5.11
2010-09-07 09:47:42	Native	2001:6f8:1468:10...	http://www.ipv6council.be/?lang=fr&var_mode=recalcul	Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.11) Gecko/20100701 Firefox/3.5.11
2010-09-07 00:53:21	Native	2001:6f8:1468:10...	http://www.vyncke.org/ipv6status/dashboard.php?country=be	Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.11) Gecko/20100701 Firefox/3.5.11
2010-09-07 00:19:08	86.24....	2002:5618:cb14:0... 6to4 Router	http://web.nickshanks.com/fonts/kannada/	Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) AppleWebKit/533.17.8 (KHTML, like Gecko) Version/5.0.1 Safari/533.17.8
2010-09-06 22:22:07	Native	2610:130:102:800...	http://web.nickshanks.com/fonts/sinhala/	Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_2; en-US) AppleWebKit/534.3 (KHTML, like Gecko) Chrome/6.0.472.53 Safari/534.3
2010-09-06 22:21:28	6to4	2002:47e9:efb8:0... 6to4 Router	http://web.nickshanks.com/browsers/safari/	Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-gb) AppleWebKit/533.17.8 (KHTML, like Gecko) Version/5.0.1 Safari/533.17.8

Historical Data

OS with IPv6

OS	% of IPv6-able
Windows Vista	45.6
Windows 7	18.5
Windows XP	14.8
Mac OS X	6.9
Linux (Ubuntu)	5
Unknown	4.1
Linux (unknown)	3
Linux (Debian)	0.9
Linux (Fedora)	0.4
Windows Server 2	0.2
Spider	0.1
Linux (Mandriva)	0.1
Windows 2000	0.1
Windows CE	0
iPhone	0
	0
SymbianOS	0
SunOS	0
FreeBSD	0
Android	0
MIDP java phone	0
Windows 98	0

IPv6 connectivity

Connectivity	% of IPv6-able
Native	24.1
Teredo	45.9
6to4	19.4
ISATAP	1.3
Free.fr	9.3

Historical data as CSV, graphes of IPv6 connectivity (all OS, Windows XP, Windows Vista), IPv6-enabled OS, IPv6-enabled countries, IP version preference, or v4 vs. v6 ratio are also available.

Your address is 38.107.191.102.
You still run IPv4...
...checking whether you have IPv6 access...
Written by Eric Vyncke (evyncke@cisco.com) August 2008. (Contact me if you want the PHP scripts or simply fetch them at http://countv6.sourceforge.net/)