Ratio of IPv4 and IPv6 hosts

By using a specific trick (collecting IPv6 statistics about clients of some specific web servers), we counted 67 hosts (since midnight UTC):

46 IPv4 only hosts;
15 dual stack hosts where IPv6 is preferred (like Windows XP & Linux) or IPv6 only hosts;
6 dual stack hosts where IPv4 is preferred (like Windows Vista);

Therefore 31.34% of Internet hosts are IPv6 enabled (not counting hosts with IPv6 enabled but without good IPv6 connectivity):

21 host(s) with native IPv6 connectivity;
0 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 Mac OS X machines?

Operating System

Count

Browser

Count

Country

Count

Teredo Servers

Frequency

IPv4 Address of Teredo Server

The last 10 accesses

Date	IPv4	IPv6	Referer	User Agent
2020-05-27 22:00:08	Native	2001:56a:f9e9:70...	http://test-ipv6.noroutetohost.net/	Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:76.0) Gecko/20100101 Firefox/76.0
2020-05-27 19:21:08	123.12...		https://www.noroutetohost.net/	Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
2020-05-27 19:21:06	123.12...		https://www.noroutetohost.net/	Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36
2020-05-27 19:17:42	92.40....		http://testipv6.com/	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36
2020-05-27 18:56:14	75.75....		https://www.noroutetohost.net/	Mozilla/5.0 (Windows NT 6.1; Win64; x64; ; NCLIENT50_AAP38D0BEF49AF) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181
2020-05-27 17:42:07	Native	2a02:8010:6003:d...	https://www.dogsukclan.co.uk/index.php?action=forum	Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:76.0) Gecko/20100101 Firefox/76.0
2020-05-27 17:15:39	40.77....		https://europa-guild.com/Roster/?lang=german&lang=english	Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534+ (KHTML, like Gecko) BingPreview/1.0b
2020-05-27 16:06:33	92.63....		https://www.dogsukclan.co.uk/	Mozilla/5.0 (Windows NT 5.1; rv:52.0) Gecko/20100101 Firefox/52.0
2020-05-27 15:56:32	193.9....			Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0
2020-05-27 15:40:37	Native	2001:8b0:7bf5:7d...	https://test-ipv6.com/	Mozilla/5.0 (iPhone; CPU iPhone OS 13_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.1 Mobile/15E148 Saf

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 redirected to http://[2001:...]/...

Date	IPv4	IPv6	Referer	User Agent
2020-04-20 11:08:31	223.16...	2002:dfa6:728d:0... 6to4 Router	http://ipv6.abfun.vip/	Mozilla/5.0 (iPhone; CPU iPhone OS 12_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.1.2 Mobile/15E148 Saf
2020-04-09 18:25:33	212.15...	2002:d49f:12e8:0... 6to4 Router	http://test-ipv6.noroutetohost.net/	Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0
2020-03-31 18:17:05	90.244...	2002:5af4:a886:0... 6to4 Router	https://www.noroutetohost.net/	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36 Edg/80
2020-02-21 15:10:24	180.14...	2002:b495:ab86:1... 6to4 Router	https://test-ipv6.com/index.html.ja_JP	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36
2020-02-16 09:35:16	6to4	2002:bc97:32d5:1... 6to4 Router	http://test-ipv6.noroutetohost.net/	Mozilla/5.0 (iPad; CPU OS 13_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/80.0.3987.95 Mobile/15E148 Safari/6
2020-02-15 23:24:17	83.25....	2002:5319:9402:1... 6to4 Router	https://www.noroutetohost.net/	Mozilla/5.0 (iPhone; CPU iPhone OS 13_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.5 Mobile/15E148 S
2020-02-14 20:09:45	2.206....	2002:2ce:4adf:0:... 6to4 Router	https://test-ipv6.com/	Mozilla/5.0 (iPhone; CPU iPhone OS 13_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.5 Mobile/15E148 S
2020-02-03 16:10:29	92.15....	2002:5c0f:2829:1... 6to4 Router	https://test-ipv6.com/	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36
2020-02-03 09:20:40	92.15....	2002:5c0f:29b5:1... 6to4 Router	https://test-ipv6.com/	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36
2020-02-03 08:00:00	92.15....	2002:5c0f:2919:1... 6to4 Router	https://test-ipv6.com/	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36

Historical Data

OS with IPv6

OS	% of IPv6-able
Windows 7	31
Windows 10	23.3
Android	15.5
Mac OS X	7.6
Linux (unknown)	6.3
Windows XP	3.9
iPhone	3.4
Spider	2.1
Linux (Ubuntu)	1.4
Unknown	1.4
Windows 8.1	1.3
Windows Vista	1.1
Windows 8	0.6
CloudFlare Alway	0.6
Facebook	0.1
ChromeOS	0.1
Linux (Fedora)	0.1
MIDP java phone	0.1
	0.1
Windows Server 2	0
Linux (Debian)	0

IPv6 connectivity

Connectivity	% of IPv6-able
Native	77
Teredo	18.3
6to4	4.3
ISATAP	0
Free.fr	0.3

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 18.204.227.117.
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)