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 (Jul 2017)

  ISP IPv6 tests count
1.Comcast Cable Communications21,286
2.Google Inc.13,699
3.Time Warner Cable Internet LLC12,890
4.Cellco Partnership DBA Verizon Wireless8,043
5.Hurricane Electric7,404
6.Cox Communications Inc.5,887
7.AT&T Internet Services4,989
8.Charter Communications4,013
9.T-Mobile USA1,677
10.AT&T Mobility LLC1,674
11.Qwest Communications Company1,661
12.Mediacom Communications Corp942
13.Digital Ocean863
14.IT7 Networks Inc727
15.Choopa573
16.Google Fiber Inc.551
17.Sprint423
18.Linode393
19.Webpass Inc.256
20.QuadraNet245
21.Google Incorporated224
22.Microsoft Corp220
23.American Registry Internet Numbers216
24.VERUS Connect209
25.Verizon Online LLC169

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, Jul 2017)

  ISP Unique IPv6 addresses
1.Comcast Cable Communications12,733
2.Time Warner Cable Internet LLC6,828
3.Cellco Partnership DBA Verizon Wireless6,614
4.Hurricane Electric3,359
5.Cox Communications Inc.3,162
6.AT&T Internet Services3,161
7.Charter Communications2,117
8.T-Mobile USA1,312
9.AT&T Mobility LLC1,128
10.Qwest Communications Company940
11.Mediacom Communications Corp576
12.Sprint317
13.Google Fiber Inc.282
14.Google Inc.237
15.IT7 Networks Inc227
16.Microsoft Corp191
17.Digital Ocean186
18.Linode177
19.Choopa171
20.Webpass Inc.163
21.Google Incorporated157
22.American Registry Internet Numbers136
23.Road Runner104
24.Arris Group94
25.VERUS Connect92

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 (Jul 2017)

  ISP Test count IPv4 IPv4 % IPv6 IPv6 %
1.Infolink Global Corporation800.0%8100.0%
2.State of Wyoming Department A&I800.0%8100.0%
3.Accenture LLP4700.0%47100.0%
4.Fibertech Networks5200.0%52100.0%
5.University of Rochester700.0%7100.0%
6.Comcast-Cable500.0%5100.0%
7.Modesto Irrigation District700.0%7100.0%
8.Louisiana State University1000.0%10100.0%
9.Sony Computer Entertainment America LLC500.0%5100.0%
10.Yahoo!1700.0%17100.0%
11.XO Communications500.0%5100.0%
12.Wells Fargo & Company1100.0%11100.0%
13.Google1300.0%13100.0%
14.Lightspeed Communications700.0%7100.0%
15.Environmental Protection Agency1200.0%12100.0%
16.TCT West500.0%5100.0%
17.Kingdom Technology Solutions1400.0%14100.0%
18.Tekify Broadband600.0%6100.0%
19.Kinber1300.0%13100.0%
20.Brigham Young University - Idaho2300.0%23100.0%
21.Ariel Antigua500.0%5100.0%
22.Server Central Network800.0%8100.0%
23.Fiber Connect1000.0%10100.0%
24.Florida High Speed Internet500.0%5100.0%
25.ScanSource Inc.1200.0%12100.0%

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 (Jul 2017)

  ISP Test count IPv6 average
1.Google Inc.13,699323.4 Mbps
2.DataShack16280.1 Mbps
3.Server Central Network8249.2 Mbps
4.SkyBest Communications INC.25220.0 Mbps
5.Clemson University7201.8 Mbps
6.Google Incorporated224166.2 Mbps
7.Plant TiftNet5164.7 Mbps
8.HostUS40156.1 Mbps
9.Akamai Technologies35143.7 Mbps
10.tw telecom holdings22115.3 Mbps
11.General Communication23114.1 Mbps
12.University of Colorado Denver5107.1 Mbps
13.Cable Television Laboratories1198.5 Mbps
14.Lightspeed Communications784.6 Mbps
15.Fastmetrics678.7 Mbps
16.Virginia Polytechnic Institute and State Univ.977.0 Mbps
17.Integra Telecom876.4 Mbps
18.Hivelocity Ventures Corp2771.6 Mbps
19.Google Fiber Inc.55170.0 Mbps
20.Mediacom Communications Corp94264.8 Mbps
21.Yomura Corporation864.0 Mbps
22.University of Wisconsin Madison663.8 Mbps
23.Cisco Systems6955.9 Mbps
24.Road Runner15649.4 Mbps
25.Webpass Inc.25647.5 Mbps