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 (Feb 2017)

  ISP IPv6 tests count
1.Comcast Cable Communications25,638
2.Time Warner Cable Internet LLC13,325
3.Google Inc.11,275
4.Cellco Partnership DBA Verizon Wireless7,987
5.Hurricane Electric7,345
6.Cox Communications Inc.6,501
7.AT&T Internet Services4,886
8.T-Mobile USA2,141
9.Charter Communications1,872
10.Qwest Communications Company1,832
11.AT&T Mobility LLC1,322
12.Mediacom Communications Corp996
13.American Registry Internet Numbers615
14.Google Fiber Inc.449
15.Digital Ocean426
16.Webpass Inc.414
17.Sprint393
18.Choopa341
19.Road Runner302
20.Linode255
21.Comcast IP Services225
22.Level 3 Communications222
23.Internet Assigned Numbers Authority194
24.Broadstripe190
25.MCI Communications Services181

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, Feb 2017)

  ISP Unique IPv6 addresses
1.Comcast Cable Communications14,099
2.Time Warner Cable Internet LLC7,336
3.Cellco Partnership DBA Verizon Wireless6,189
4.Hurricane Electric3,506
5.Cox Communications Inc.3,217
6.AT&T Internet Services3,027
7.T-Mobile USA1,605
8.Qwest Communications Company994
9.Charter Communications894
10.AT&T Mobility LLC888
11.Mediacom Communications Corp562
12.Sprint324
13.American Registry Internet Numbers292
14.Google Fiber Inc.292
15.Webpass Inc.274
16.Google Inc.189
17.Road Runner180
18.Digital Ocean147
19.Internet Assigned Numbers Authority138
20.Choopa134
21.Microsoft Corp132
22.Comcast IP Services118
23.Midcontinent Communications116
24.Linode106
25.Google Incorporated106

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 (Feb 2017)

  ISP Test count IPv4 IPv4 % IPv6 IPv6 %
1.Epic Systems Corporation700.0%7100.0%
2.VPS Cheap INC.700.0%7100.0%
3.University of Tennessee at Chattanooga600.0%6100.0%
4.Ednetics700.0%7100.0%
5.Hudson Valley Datanet500.0%5100.0%
6.Florida High Speed Internet900.0%9100.0%
7.Yale University600.0%6100.0%
8.Virginia Polytechnic Institute and State Univ.1100.0%11100.0%
9.Shentel Communications1100.0%11100.0%
10.Yahoo!2300.0%23100.0%
11.Wells Fargo & Company2300.0%23100.0%
12.University of Pittsburgh800.0%8100.0%
13.Fibertech Networks4900.0%49100.0%
14.WZ Communications Inc.500.0%5100.0%
15.Google-corp-apac500.0%5100.0%
16.University of Iowa500.0%5100.0%
17.University System of New Hampshire500.0%5100.0%
18.New Dream Network1100.0%11100.0%
19.Georgia Institute of Technology600.0%6100.0%
20.Pajama Factory500.0%5100.0%
21.The Hinton CATV Company600.0%6100.0%
22.Unitymedia800.0%8100.0%
23.Uk-microsoft-msit500.0%5100.0%
24.Ohio State University1800.0%18100.0%
25.Rensselaer Polytechnic Institute1000.0%10100.0%

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 (Feb 2017)

  ISP Test count IPv6 average
1.University of Minnesota9434.4 Mbps
2.Google Inc.11,275291.5 Mbps
3.Apple Inc.38245.0 Mbps
4.General Communication43191.0 Mbps
5.Amazon.com69162.6 Mbps
6.Netflix Inc9143.1 Mbps
7.Cenic36124.8 Mbps
8.Google Incorporated121117.2 Mbps
9.Quantcast Corporation19112.3 Mbps
10.QuickPacket3286.0 Mbps
11.Multnomah Education Service District1081.5 Mbps
12.LinkedIn Corporation775.8 Mbps
13.Google Fiber Inc.44975.1 Mbps
14.Adelphi University861.4 Mbps
15.Road Runner30257.4 Mbps
16.Condointernet.net12756.5 Mbps
17.Interstate Telecommunications Cooperative952.2 Mbps
18.Astound Broadband LLC2351.1 Mbps
19.Lake Buena Vista LBV Company1950.0 Mbps
20.Time Warner Cable Internet LLC13,32545.2 Mbps
21.Comcast Cable Communications25,63844.6 Mbps
22.Strong Technology743.1 Mbps
23.Internet24441.1 Mbps
24.Indiana University2238.6 Mbps
25.Mediacom Communications Corp99637.5 Mbps