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 (Dec 2016)

  ISP IPv6 tests count
1.Comcast Cable Communications19,679
2.Time Warner Cable Internet LLC12,861
3.Hurricane Electric8,219
4.Google Inc.7,172
5.Cellco Partnership DBA Verizon Wireless6,286
6.Cox Communications Inc.6,074
7.AT&T Internet Services3,718
8.Qwest Communications Company1,913
9.Charter Communications1,408
10.T-Mobile USA1,326
11.Hudson Valley Datanet1,096
12.Mediacom Communications Corp934
13.AT&T Mobility LLC908
14.American Registry Internet Numbers594
15.Digital Ocean499
16.Webpass Inc.412
17.Google Fiber Inc.395
18.Choopa336
19.Road Runner273
20.Comcast IP Services251
21.Sprint220
22.Linode212
23.Level 3 Communications205
24.Tds Telecom175
25.Frontier Communications Solutions173

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, Dec 2016)

  ISP Unique IPv6 addresses
1.Comcast Cable Communications11,472
2.Time Warner Cable Internet LLC6,649
3.Cellco Partnership DBA Verizon Wireless4,988
4.Hurricane Electric3,452
5.Cox Communications Inc.2,872
6.AT&T Internet Services2,392
7.T-Mobile USA1,060
8.Qwest Communications Company944
9.Charter Communications676
10.AT&T Mobility LLC624
11.Mediacom Communications Corp492
12.American Registry Internet Numbers276
13.Webpass Inc.217
14.Google Fiber Inc.207
15.Google Inc.177
16.Sprint175
17.Digital Ocean168
18.Road Runner156
19.Comcast IP Services150
20.Choopa124
21.Internet Assigned Numbers Authority121
22.Frontier Communications Solutions97
23.Arris Group91
24.Midcontinent Communications90
25.Microsoft Corp87

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 (Dec 2016)

  ISP Test count IPv4 IPv4 % IPv6 IPv6 %
1.Kabeldeutschland800.0%8100.0%
2.Desync Networks2600.0%26100.0%
3.Cernet2-tsinghua6600.0%6100.0%
4.TCT West700.0%7100.0%
5.The Pennsylvania State University500.0%5100.0%
6.Multnomah Education Service District1400.0%14100.0%
7.Lty Llc1200.0%12100.0%
8.VPS Cheap INC.1000.0%10100.0%
9.Wells Fargo & Company1100.0%11100.0%
10.Modesto Irrigation District900.0%9100.0%
11.Yahoo!1200.0%12100.0%
12.Florida High Speed Internet500.0%5100.0%
13.University of Oregon600.0%6100.0%
14.CloudFlare800.0%8100.0%
15.Hosting Solution Ltd.500.0%5100.0%
16.Fibertech Networks6300.0%63100.0%
17.Mnet900.0%9100.0%
18.Continuum Data Centers1000.0%10100.0%
19.TruVista Communications600.0%6100.0%
20.WiscNet800.0%8100.0%
21.nfrastructure Technologies500.0%5100.0%
22.Rockman Communications500.0%5100.0%
23.Hudson Valley Datanet1,096111.0%1,08599.0%
24.Microsoft Corp9433.2%9196.8%
25.Hughes Network Systems3113.2%3096.8%

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 (Dec 2016)

  ISP Test count IPv6 average
1.University of Minnesota8434.4 Mbps
2.Google Inc.7,172243.9 Mbps
3.General Communication43179.3 Mbps
4.Apple Inc.34127.8 Mbps
5.Google Incorporated108117.0 Mbps
6.Quantcast Corporation6112.5 Mbps
7.National Aeronautics and Space Administration18109.9 Mbps
8.Amazon.com16104.2 Mbps
9.Linode21282.2 Mbps
10.Multnomah Education Service District1479.3 Mbps
11.Nazarene Bible College1977.9 Mbps
12.LinkedIn Corporation3675.8 Mbps
13.Qualcomm9367.9 Mbps
14.Indiana University2759.5 Mbps
15.Webpass Inc.41253.4 Mbps
16.High Performance Computing3352.3 Mbps
17.Leaseweb USA6651.7 Mbps
18.Google Fiber Inc.39551.5 Mbps
19.Road Runner27351.4 Mbps
20.Astound Broadband LLC2851.1 Mbps
21.vanoppen.biz LLC948.5 Mbps
22.University of Pittsburgh1048.3 Mbps
23.OARnet745.2 Mbps
24.Time Warner Cable Internet LLC12,86144.1 Mbps
25.Strong Technology743.1 Mbps