United States IPv6 in United States

These graphs show the evolution of default protocol, v6 address types, and average bandwidth in United States 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 States

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 States (Jan 2017)

  ISP IPv6 tests count
1.Comcast Cable Communications22,632
2.Time Warner Cable Internet LLC13,380
3.Google Inc.8,398
4.Hurricane Electric7,699
5.Cellco Partnership DBA Verizon Wireless6,240
6.Cox Communications Inc.6,221
7.AT&T Internet Services4,518
8.Qwest Communications Company1,910
9.T-Mobile USA1,904
10.Charter Communications1,422
11.AT&T Mobility LLC1,074
12.Mediacom Communications Corp997
13.American Registry Internet Numbers563
14.Google Fiber Inc.448
15.Digital Ocean427
16.Webpass Inc.383
17.Sprint350
18.Choopa320
19.Road Runner292
20.Comcast IP Services257
21.Level 3 Communications256
22.Internet Assigned Numbers Authority201
23.State University of New York at Buffalo197
24.Frontier Communications Solutions193
25.Linode171

IPv6 and v4 protocol support in United States (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 States (unique addresses, Jan 2017)

  ISP Unique IPv6 addresses
1.Comcast Cable Communications13,417
2.Time Warner Cable Internet LLC7,086
3.Cellco Partnership DBA Verizon Wireless4,933
4.Hurricane Electric3,519
5.Cox Communications Inc.3,053
6.AT&T Internet Services2,844
7.T-Mobile USA1,445
8.Qwest Communications Company957
9.AT&T Mobility LLC731
10.Charter Communications719
11.Mediacom Communications Corp534
12.Sprint280
13.American Registry Internet Numbers262
14.Google Fiber Inc.262
15.Webpass Inc.239
16.Google Inc.172
17.Road Runner169
18.Digital Ocean157
19.Internet Assigned Numbers Authority150
20.Comcast IP Services141
21.Choopa132
22.Microsoft Corp126
23.Frontier Communications Solutions107
24.Midcontinent Communications105
25.Google Incorporated91

Default browser protocol in United States

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.

Default browser protocol in United States (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 States (Jan 2017)

  ISP Test count IPv4 IPv4 % IPv6 IPv6 %
1.The Hinton CATV Company600.0%6100.0%
2.VPS Cheap INC.1000.0%10100.0%
3.Unitymedia700.0%7100.0%
4.Rockman Communications500.0%5100.0%
5.Fibertech Networks5200.0%52100.0%
6.IP- Accelerated IT Services GmbH500.0%5100.0%
7.University of Pittsburgh500.0%5100.0%
8.Google-corp-apac500.0%5100.0%
9.nfrastructure Technologies600.0%6100.0%
10.Modesto Irrigation District500.0%5100.0%
11.Cogeco Cable Inc.1300.0%13100.0%
12.Liquid Web500.0%5100.0%
13.Rensselaer Polytechnic Institute1200.0%12100.0%
14.New Dream Network1300.0%13100.0%
15.Hosting Solution Ltd.600.0%6100.0%
16.Yahoo!1600.0%16100.0%
17.Brigham Young University600.0%6100.0%
18.Florida High Speed Internet1200.0%12100.0%
19.Continuum Data Centers1000.0%10100.0%
20.Total Server Solutions L.L.C.900.0%9100.0%
21.Mnet900.0%9100.0%
22.Wells Fargo & Company2000.0%20100.0%
23.Nazarene Bible College1400.0%14100.0%
24.Ohio State University500.0%5100.0%
25.Epic Systems Corporation700.0%7100.0%

IPv6 address types in United States

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 States

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 States (Jan 2017)

  ISP Test count IPv6 average
1.University of Minnesota8434.4 Mbps
2.Google Inc.8,398292.7 Mbps
3.Apple Inc.33240.6 Mbps
4.General Communication50170.5 Mbps
5.Netflix Inc14143.1 Mbps
6.Amazon.com29126.5 Mbps
7.Google Incorporated104117.2 Mbps
8.Quantcast Corporation17112.3 Mbps
9.National Aeronautics and Space Administration13109.9 Mbps
10.QuickPacket2286.0 Mbps
11.Multnomah Education Service District1081.5 Mbps
12.LinkedIn Corporation875.8 Mbps
13.Google Fiber Inc.44873.5 Mbps
14.Adelphi University2461.4 Mbps
15.Lightspeed Communications555.3 Mbps
16.High Performance Computing2252.3 Mbps
17.Webpass Inc.38352.1 Mbps
18.Astound Broadband LLC2851.1 Mbps
19.Road Runner29250.6 Mbps
20.vanoppen.biz LLC848.5 Mbps
21.Time Warner Cable Internet LLC13,38045.2 Mbps
22.Strong Technology843.1 Mbps
23.Comcast Cable Communications22,63242.6 Mbps
24.Internet24941.1 Mbps
25.Duke University739.6 Mbps