United Kingdom IPv6 in United Kingdom

These graphs show the evolution of default protocol, v6 address types, and average bandwidth in United Kingdom over time.

They are generated using the data collected by the ipv6-test.com connection test page, and are updated on a monthly basis.

Overall IPv6 and v4 protocol support in United Kingdom

This graph shows the evolution of IPv6 support vs IPv4 for all our connection test.

The numbers are percentages, so we can expect almost 100% of hosts supporting IPv4 with a slow growth for IPv6.

Top 25 internet service providers for IPv6 in United Kingdom (Feb 2023)

  ISP IPv6 tests count
1.Bt Uk772
2.Sky Broadband633
3.Andrews & Arnold Ltd442
4.British Telecommunications PLC398
5.Hyperoptic Ltd320
6.Cityfibre Limited265
7.Zen Internet Ltd252
8.Hurricane Electric LLC244
9.The Constant Company129
10.Akamai Technologies, Inc.116
11.Community Fibre Limited116
12.Cloudflare, Inc.95
13.EE Limited93
14.SpaceX Starlink90
15.Zen Internet Limited84
16.Blix Solutions83
17.Route4882
18.M12 Solutions72
19.Infinity Developments Limited71
20.Oracle Corporation58
21.Toob Limited57
22.xTom GmbH49
23.Cloudflarewarp43
24.Ovh Sas42
25.Path Global UK Limited42

IPv6 and v4 protocol support in United Kingdom (unique addresses)

This graph shows the evolution of IPv6 support vs IPv4 for unique users of our connection test.

The numbers are percentages, so we can expect a slow growth towards 50% v4 / 50% v6.

Top 25 internet service providers for IPv6 in United Kingdom (unique addresses, Feb 2023)

  ISP Unique IPv6 addresses
1.Bt Uk475
2.Sky Broadband342
3.British Telecommunications PLC232
4.Andrews & Arnold Ltd220
5.Hyperoptic Ltd171
6.Zen Internet Ltd149
7.Hurricane Electric LLC146
8.The Constant Company92
9.Akamai Technologies, Inc.90
10.Community Fibre Limited79
11.Cloudflare, Inc.74
12.EE Limited62
13.SpaceX Starlink53
14.Zen Internet Limited52
15.Cityfibre Limited51
16.M12 Solutions46
17.Infinity Developments Limited45
18.Route4840
19.Toob Limited33
20.Cloudflarewarp30
21.Ovh Sas23
22.Fastly, Inc.22
23.Hutchison 3G UK Limited20
24.M247 Ltd20
25.Linode, LLC17

Default browser protocol in United Kingdom

This graph shows the percentage of browsers that default to IPv6 vs. IPv4 when visiting the ipv6-test connection test.

Hopefully, in the not so distant future, the v6 part will grow taller than the v4 one.

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Default browser protocol in United Kingdom (dual-stack users)

This graph shows the percentage of browsers that default to IPv6 vs. IPv4 for users that have both v4 and v6 connectivity.

Usually a system will default to v6 when it's available, but in some cases with tunneled connections, v4 stays the default.

Top 25 internet service providers for IPv6 default in United Kingdom (Feb 2023)

  ISP Test count IPv4 IPv4 % IPv6 IPv6 %
1.Unchained ISP Limited500.0%5100.0%
2.Internetty Ltd600.0%6100.0%
3.Contabo Asia Private Limited500.0%5100.0%
4.Divergent Networks LTD500.0%5100.0%
5.Securebit AG600.0%6100.0%
6.Structured Comminications Global500.0%5100.0%
7.The Constant Company12921.6%12798.4%
8.Hutchison 3G UK Limited2727.4%2592.6%
9.Bridge Fibre Limited1317.7%1292.3%
10.VMHaus - London1218.3%1191.7%
11.Mythic Beasts10110.0%990.0%
12.Ionos Se16212.5%1487.5%
13.Leaseweb UK Limited8112.5%787.5%
14.Grayshott Gigabit Limited30413.3%2686.7%
15.British Telecommunications PLC3985413.6%34486.4%
16.Toob Limited57814.0%4986.0%
17.Google, LLC6116.7%583.3%
18.Lit Fibre Group Ltd.12216.7%1083.3%
19.Aaisp18316.7%1583.3%
20.Infinity Developments Limited711216.9%5983.1%
21.Blix Solutions831518.1%6881.9%
22.Binary Racks Limited11218.2%981.8%
23.Sky Broadband63311918.8%51481.2%
24.FibreNest Subscribers10220.0%880.0%
25.WightFibre Limited5120.0%480.0%

IPv6 address types in United Kingdom

Here you can see the evolution of address types over time, and measure usage of 6to4 and Teredo tunneled connectivity.

It should be noted that because 6rd works with native addresses, it cannot be detected here as tunneled. This is also the case with VPN based tunnels.

Downstream bandwidth in United Kingdom

This graph illustrates the connection speed gap between IPv4 and IPv6, numbers represent v6 speed as percentage of v4 speed.

The lower IPv6 speeds are often caused by tunneling overhead or insufficient v6 connectivity or peering capacity at ISPs.

Top 25 internet service providers for IPv6 speed in United Kingdom (Feb 2023)

  ISP Test count IPv6 average
1.M12 Solutions72531.3 Mbps
2.Toob Limited57462.1 Mbps
3.Community Fibre Limited116433.1 Mbps
4.31173 Services AB34339.4 Mbps
5.Grain Communications Limited9253.3 Mbps
6.Trooli Ltd35240.2 Mbps
7.Hyperoptic Ltd320217.8 Mbps
8.Cloudflare, Inc.95199.1 Mbps
9.Zen Internet Limited84198.0 Mbps
10.British Telecommunications PLC398177.3 Mbps
11.Jisc Services Limited13169.3 Mbps
12.Lit Fibre Group Ltd.12165.0 Mbps
13.Grayshott Gigabit Limited30143.5 Mbps
14.Leaseweb UK Limited8137.8 Mbps
15.Zen Internet Ltd252124.2 Mbps
16.Bt Uk772123.7 Mbps
17.Hurricane Electric LLC24490.3 Mbps
18.SpaceX Starlink9082.0 Mbps
19.Andrews & Arnold Ltd44269.6 Mbps
20.Sky Broadband63356.5 Mbps
21.Route488243.5 Mbps
22.Virgin Media3342.9 Mbps
23.Akamai Technologies, Inc.11633.7 Mbps
24.Oracle Corporation5831.4 Mbps
25.Fastly, Inc.3531.3 Mbps
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