Ratio of IPv4 and IPv6 hosts

By using a specific trick (collecting IPv6 statistics about clients of some specific web servers), we counted 17 hosts (since midnight UTC):

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

Therefore 23.53% of Internet hosts are IPv6 enabled (not counting hosts with IPv6 enabled but without good IPv6 connectivity):

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

Browsers and Operating Systems

Statistics about 6to4 tunnel 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 Windows 8 or Mac OS X or iOS machines?

Operating System	Count
Windows 8.1	1

Browser	Count
Firefox	1

Country	Count
	1

Teredo Servers

Frequency

IPv4 Address of Teredo Server

The last 10 accesses

Date	IPv4	IPv6	Referer	User Agent
2017-09-22 02:48:12	176.11...		https://www.vyncke.org/ipv6status/dashboard.php?country=RU&lang=en	Mozilla/5.0 (Linux; Android 6.0.1; SM-G900FD Build/MMB29M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Mobile Saf Android/Google Chrome
2017-09-22 02:44:42	47.88....	2002:2f58:64bd::...	https://www.vyncke.org/ipv6status/project.php?metric=p&country=cg	Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0 Windows 8.1/Firefox
2017-09-22 02:25:11	218.24...		https://www.vyncke.org/ipv6status/detailed.php?country=cn	Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.101 Safari/537.36 Windows 7/Google Chrome
2017-09-22 02:09:57	190.93...		http://www.wyzer.cl/zona/articulo/mktDHCPalert	Mozilla/5.0 (Windows NT 10.0; WOW64; rv:55.0) Gecko/20100101 Firefox/55.0 Unknown/Firefox
2017-09-22 02:01:22	153.24...		https://www.vyncke.org/ipv6status/dashboard.php?country=jp&lang=en	Mozilla/5.0 (Android 6.0.1; Tablet; rv:55.0) Gecko/55.0 Firefox/55.0 Android/Firefox
2017-09-22 01:55:45	213.20...		http://www.noroutetohost.net/	Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safar iPhone/Apple Safari
2017-09-22 01:42:53	190.18...		http://www.wyzer.cl/zona/articulo/mktDHCPalert	Mozilla/5.0 (Windows NT 6.0; WOW64; rv:55.0) Gecko/20100101 Firefox/55.0 Windows Vista/Firefox
2017-09-22 01:41:38	Native	2a05:5800:101:2f...	https://www.vyncke.org/	Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0 Linux (Ubuntu)/Firefox
2017-09-22 01:37:45	40.77....			Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534+ (KHTML, like Gecko) BingPreview/1.0b Windows 7/AppleWebKit
2017-09-22 01:36:06	213.14...		http://www.wyzer.cl/zona/articulo/mejorarWiFi	Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_2 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) Version/7.0 Mobile/11D257 Safar iPhone/Apple Safari

The last 10 IPv6 accesses 6to4 tunnel 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 explicitely redirected to http://[2001:...]/...

Date	IPv4	IPv6	Referer	User Agent
2017-09-22 02:44:42	47.88....	2002:2f58:64bd::...	https://www.vyncke.org/ipv6status/project.php?metric=p&country=cg	Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0 Windows 8.1/Firefox
2017-09-21 22:38:19	195.20...	2002:c314:67a1:0... 6to4 Router	https://www.vyncke.org/ipv6status/dashboard.php?country=RU&lang=en	Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:52.0) Gecko/20100101 Firefox/52.0 Cyberfox/52.3.0 Windows 7/Firefox
2017-09-21 18:29:20	155.4....	2002:9b04:20fa:e... 6to4 Router	http://test-ipv6.se/	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36 Unknown/Google Chrome
2017-09-21 13:49:17	94.255...	2002:5eff:e3b9:0... 6to4 Router	http://test-ipv6.se/	Mozilla/5.0 (Linux; Android 5.1.1; Redmi 3 Build/LMY47V) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 YaBrowser/1 Android/Google Chrome
2017-09-21 13:09:21	94.255...	2002:5eff:e3b9:0... 6to4 Router	http://test-ipv6.se/	Mozilla/5.0 (Linux; Android 6.0.1; SGP611 Build/23.5.A.1.291) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 YaBrow Android/Google Chrome
2017-09-21 11:46:05	94.255...	2002:5eff:e3b9:0... 6to4 Router	http://test-ipv6.se/	Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.18 Safari/537.36 Linux (unknown)/Google Chrome
2017-09-21 11:24:05	46.72....	2002:2e48:db0e:1... 6to4 Router	https://www.vyncke.org/ipv6status/dashboard.php?country=RU&lang=en	Mozilla/5.0 (Linux; Android 5.0.2; Blade S6 Build/LRX22G) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.116 Mobile Saf Android/Google Chrome
2017-09-21 00:32:05	94.255...	2002:5eff:e3b9:0... 6to4 Router	http://test-ipv6.se/	Mozilla/5.0 (Linux; Android 6.0.1; SGP611 Build/23.5.A.1.291) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 YaBrow Android/Google Chrome
2017-09-21 00:09:26	94.255...	2002:5eff:e3b9:0... 6to4 Router	http://test-ipv6.se/	Mozilla/5.0 (Linux; Android 6.0.1; SGP611 Build/23.5.A.1.291) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 YaBrow Android/Google Chrome
2017-09-21 00:05:45	94.255...	2002:5eff:e3b9:0... 6to4 Router	http://test-ipv6.se/	Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.18 Safari/537.36 Linux (unknown)/Google Chrome

Historical Data for all sites

OS with IPv6

OS	% of IPv6-able
Windows 7	51.4
Mac OS X	9.5
Linux (unknown)	7.9
Windows Vista	7.6
Unknown	5.1
Windows 8	3.3
Windows XP	3.2
Linux (Ubuntu)	2.9
Windows 8.1	2.6
Android	2
iPhone	1
iPad	0.9
Spider	0.6
Facebook shim	0.5
Google shim	0.4
Linux (Fedora)	0.3
Linux (Debian)	0.1
FreeBSD	0.1
	0.1
Windows Server 2	0.1
Chromium	0
Linux (Mandriva)	0
SunOS	0
SymbianOS	0
NetBSD	0
Windows 2000	0
Windows CE	0
MIDP java phone	0
Windows 98	0
Blackberry	0
Mac_PowerPC	0
Nintendo Wii	0
iOS	0
Windows Phone	0
Playstation	0
Nokia	0

IPv6 connectivity

Connectivity	% of IPv6-able
Native	45.9
Teredo	39.5
6to4	12.1
ISATAP	0.3
Free.fr	2.2

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 23.20.166.68.
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/). This product includes GeoLite data created by MaxMind, available from http://www.maxmind.com/.