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 (Sep 2017)

  ISP IPv6 tests count
1.Comcast Cable Communications21,529
2.Google Inc.14,268
3.Spectrum7,901
4.Cellco Partnership DBA Verizon Wireless7,596
5.Hurricane Electric7,428
6.Time Warner Cable Internet LLC6,828
7.Cox Communications Inc.6,206
8.AT&T Internet Services5,527
9.Charter Communications4,442
10.AT&T Mobility LLC2,570
11.T-Mobile USA1,570
12.CenturyLink1,475
13.Choopa1,012
14.Mediacom Communications Corp741
15.IT7 Networks Inc679
16.Sprint539
17.Digital Ocean526
18.Google Fiber Inc.518
19.Qwest Communications Company514
20.AT&T Services422
21.Microsoft Corp340
22.Linode275
23.QuadraNet245
24.Southwestern Wireless221
25.Webpass Inc.210

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, Sep 2017)

  ISP Unique IPv6 addresses
1.Comcast Cable Communications13,125
2.Cellco Partnership DBA Verizon Wireless6,286
3.Spectrum3,846
4.Time Warner Cable Internet LLC3,665
5.Hurricane Electric3,437
6.AT&T Internet Services3,319
7.Cox Communications Inc.3,306
8.Charter Communications2,395
9.T-Mobile USA1,249
10.AT&T Mobility LLC1,227
11.CenturyLink773
12.Mediacom Communications Corp480
13.Sprint385
14.Google Fiber Inc.322
15.Choopa310
16.AT&T Services302
17.Qwest Communications Company302
18.Microsoft Corp289
19.IT7 Networks Inc259
20.Google Inc.255
21.Linode156
22.Digital Ocean147
23.Webpass Inc.146
24.Road Runner132
25.Arris Group118

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 (Sep 2017)

  ISP Test count IPv4 IPv4 % IPv6 IPv6 %
1.Florida Department of Management Services500.0%5100.0%
2.Quantcast Corporation1400.0%14100.0%
3.New Lisbon Telephone Co.800.0%8100.0%
4.Infolink Global Corporation800.0%8100.0%
5.Cenic11900.0%119100.0%
6.Tekify Broadband600.0%6100.0%
7.Lancaster Lebanon Intermediate Unit 13600.0%6100.0%
8.Facebook Ireland Ltd1000.0%10100.0%
9.Ariel Antigua1000.0%10100.0%
10.Internet2900.0%9100.0%
11.Killeen Wireless1100.0%11100.0%
12.Kinber1800.0%18100.0%
13.West Chester University600.0%6100.0%
14.Sony Computer Entertainment America LLC700.0%7100.0%
15.TCT West500.0%5100.0%
16.CarolinaConnect Cooperative6500.0%65100.0%
17.Selectronics Corp.1200.0%12100.0%
18.Transtelco Inc500.0%5100.0%
19.University of Pittsburgh2000.0%20100.0%
20.OVH Hosting700.0%7100.0%
21.University of Rochester500.0%5100.0%
22.Brigham Young University - Idaho2300.0%23100.0%
23.Anexia600.0%6100.0%
24.Illinois Institute of Technology700.0%7100.0%
25.Accenture LLP1600.0%16100.0%

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 (Sep 2017)

  ISP Test count IPv6 average
1.Microsoft Corp340824.7 Mbps
2.Google Inc.14,268449.9 Mbps
3.Ability Business24307.4 Mbps
4.DataShack21273.8 Mbps
5.Columbia University9254.5 Mbps
6.Microsoft Corporation9245.1 Mbps
7.Nola Broadband Inc31218.3 Mbps
8.Midcontinent Media19210.3 Mbps
9.Indiana University21169.5 Mbps
10.Plant TiftNet5164.7 Mbps
11.University of California92163.3 Mbps
12.General Communication32131.8 Mbps
13.Greenlight Networks70129.6 Mbps
14.Aruba Networks5126.7 Mbps
15.Lightspeed Communications32121.1 Mbps
16.Google Incorporated153116.1 Mbps
17.HostUS54110.0 Mbps
18.Cable Television Laboratories1798.5 Mbps
19.University of Pittsburgh2098.2 Mbps
20.Internet Broadcasting Systems594.3 Mbps
21.University of Wisconsin Whitewater591.1 Mbps
22.RamNode LLC4884.8 Mbps
23.Fastmetrics678.7 Mbps
24.Integra Telecom976.4 Mbps
25.Lancaster Lebanon Intermediate Unit 13676.1 Mbps