Ratio of IPv4 and IPv6 hosts

By using a specific trick (collecting IPv6 statistics about clients of some specific web servers), we counted 98 hosts (since midnight UTC):

54 IPv4 only hosts;
33 dual stack hosts where IPv6 is preferred (like Windows XP & Linux) or IPv6 only hosts;
11 dual stack hosts where IPv4 is preferred (like Windows Vista);

Therefore 44.9% of Internet hosts are IPv6 enabled (not counting hosts with IPv6 enabled but without good IPv6 connectivity):

36 host(s) with native IPv6 connectivity;
1 host(s) using 6to4 tunnels (including 1 routers/home gateways);
0 host(s) using ISATAP tunnels;
7 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
Linux (unknown)	1

Browser	Count
Google Chrome	1

Country	Count
	1

Teredo Servers

Frequency	IPv4 Address of Teredo Server
3	94.245.121.253 (Teredo server at Microsoft)
3	157.56.144.215 (157.56.144.215)
1	157.56.120.207 (157.56.120.207)

The last 10 accesses

Date	IPv4	IPv6	Referer	User Agent
2017-07-21 14:31:49	Native	2001:470:6f:509:...		Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/603.3.8 (KHTML, like Gecko) Version/10.1.2 Safari/603.3.8 Mac OS X/Apple Safari
2017-07-21 14:28:14	180.18...			Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36 Windows 7/Google Chrome
2017-07-21 14:27:45	169.50...			Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36 Unknown/Google Chrome
2017-07-21 14:14:58	92.17....		http://aufbix.org/	Mozilla/5.0 (iPhone; CPU iPhone OS 10_2_1 like Mac OS X) AppleWebKit/602.4.6 (KHTML, like Gecko) Version/10.0 Mobile/14D27 Safar iPhone/Apple Safari
2017-07-21 14:00:49	80.72....		https://www.vyncke.org/ipv6status/dashboard.php?country=RU&lang=en	Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36 Windows 8.1/Google Chrome
2017-07-21 13:51:01	109.13...			Mozilla/5.0 (iPhone; CPU iPhone OS 10_2_1 like Mac OS X) AppleWebKit/602.4.6 (KHTML, like Gecko) Version/10.0 Mobile/14D27 Safar iPhone/Apple Safari
2017-07-21 13:49:14	Native	2a02:a03f:40df:7...		Mozilla/5.0 (Linux; Android 6.0.1; TOMMY Build/MMB29M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.83 Mobile Safari/ Android/Google Chrome
2017-07-21 13:42:14	206.25...	2001:1be0:1000:1...		Mozilla/5.0 (compatible; oBot/2.3.1; http://filterdb.iss.net/crawler/) Spider/Spider
2017-07-21 13:40:48	Native	2a01:cb1d:4c4:8a...	https://www.vyncke.org/ipv6status/compare.php?metric=p&countries=fr	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36 Unknown/Google Chrome
2017-07-21 13:37:41	185.20...		https://www.vyncke.org/ipv6status/dashboard.php?country=RU&lang=en	Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36 Linux (unknown)/Google Chrome

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
2017-07-21 10:21:56	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/60.0.3112.72 Safari/537.36 Linux (unknown)/Google Chrome
2017-07-20 15:54:09	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/59.0.3071.115 Safari/537.36 Unknown/Google Chrome
2017-07-18 19:19:16	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/60.0.3112.66 Safari/537.36 Linux (unknown)/Google Chrome
2017-07-18 17:45:35	46.151...	2002:2e97:578d:1... 6to4 Router	https://www.vyncke.org/ipv6status/dashboard.php?country=RU&lang=en	Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36 Windows XP/Google Chrome

Historical Data for all sites

OS with IPv6

OS	% of IPv6-able
Windows 7	51.7
Mac OS X	9.4
Linux (unknown)	7.9
Windows Vista	7.7
Unknown	4.8
Windows 8	3.3
Windows XP	3.3
Linux (Ubuntu)	2.9
Windows 8.1	2.7
Android	2
iPhone	1
iPad	0.9
Spider	0.6
Facebook shim	0.5
Google shim	0.5
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	45.5
Teredo	39.8
6to4	12.2
ISATAP	0.3
Free.fr	2.3

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 23.20.193.33.
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/.