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 (May 2017)

  ISP IPv6 tests count
1.Comcast Cable Communications22,645
2.Google Inc.15,150
3.Time Warner Cable Internet LLC12,542
4.Cellco Partnership DBA Verizon Wireless9,292
5.Hurricane Electric7,127
6.Cox Communications Inc.6,354
7.AT&T Internet Services4,349
8.Charter Communications2,654
9.Qwest Communications Company2,078
10.T-Mobile USA1,984
11.AT&T Mobility LLC1,527
12.Mediacom Communications Corp1,181
13.Digital Ocean838
14.IT7 Networks Inc722
15.Choopa646
16.Linode560
17.CenturyTel Internet Holdings487
18.Google Fiber Inc.467
19.InfoWest411
20.Sprint301
21.American Registry Internet Numbers300
22.Webpass Inc.288
23.Amazon.com256
24.QuadraNet244
25.Google Incorporated202

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, May 2017)

  ISP Unique IPv6 addresses
1.Comcast Cable Communications13,254
2.Cellco Partnership DBA Verizon Wireless7,036
3.Time Warner Cable Internet LLC6,588
4.Hurricane Electric3,396
5.Cox Communications Inc.3,193
6.AT&T Internet Services2,751
7.T-Mobile USA1,463
8.Charter Communications1,260
9.AT&T Mobility LLC1,035
10.Qwest Communications Company980
11.Mediacom Communications Corp618
12.Google Inc.257
13.Google Fiber Inc.252
14.Sprint239
15.IT7 Networks Inc212
16.Digital Ocean200
17.Choopa192
18.Webpass Inc.186
19.Linode186
20.CenturyTel Internet Holdings160
21.American Registry Internet Numbers139
22.Arris Group125
23.Google Incorporated117
24.Microsoft Corp112
25.Road Runner112

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 (May 2017)

  ISP Test count IPv4 IPv4 % IPv6 IPv6 %
1.Epic Systems Corporation500.0%5100.0%
2.California State Polytechnic University - Pomona500.0%5100.0%
3.Connecticut Education Network800.0%8100.0%
4.LinkedIn Austria GmbH1400.0%14100.0%
5.Ie-dropbox-amerv6900.0%9100.0%
6.Logix600.0%6100.0%
7.Accenture LLP4600.0%46100.0%
8.Sony Computer Entertainment America LLC500.0%5100.0%
9.Compudyne500.0%5100.0%
10.Kingdom Technology Solutions800.0%8100.0%
11.DigitalFyre Internet Solutions500.0%5100.0%
12.Netflix Inc500.0%5100.0%
13.cPanel500.0%5100.0%
14.RGC Wireless800.0%8100.0%
15.nfrastructure Technologies600.0%6100.0%
16.RIPE Network Coordination Centre500.0%5100.0%
17.Indiana University1000.0%10100.0%
18.Tata Communications (america) Inc800.0%8100.0%
19.Check Point Software Technologies600.0%6100.0%
20.Vinakom Communications900.0%9100.0%
21.Anexia500.0%5100.0%
22.University of Rochester600.0%6100.0%
23.State of Wyoming Department A&I800.0%8100.0%
24.Modesto Irrigation District700.0%7100.0%
25.University of Pittsburgh500.0%5100.0%

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 (May 2017)

  ISP Test count IPv6 average
1.AT&T Services82329.8 Mbps
2.Google Inc.15,150263.1 Mbps
3.Kingdom Technology Solutions8230.9 Mbps
4.Akamai Technologies10143.7 Mbps
5.Cornell University12126.3 Mbps
6.Apple Inc.60116.0 Mbps
7.Incero LLC27115.6 Mbps
8.General Communication33112.0 Mbps
9.State University of New York at Buffalo64111.9 Mbps
10.Google Incorporated202110.5 Mbps
11.SkyBest Communications INC.17109.5 Mbps
12.Guadalupe Valley Telephone Cooperative6108.8 Mbps
13.University of Colorado Denver5107.1 Mbps
14.C7 Data Centers8102.2 Mbps
15.Dynatrace685.5 Mbps
16.Airstream Communications1682.8 Mbps
17.Cascadelink Inc1380.7 Mbps
18.tw telecom holdings5080.5 Mbps
19.Sixxs-uschi02-tunnels569.7 Mbps
20.Mixon/Hill667.8 Mbps
21.FirstDigital Communications964.1 Mbps
22.The Hinton CATV Company1362.9 Mbps
23.Google Fiber Inc.46762.3 Mbps
24.Georgia Institute of Technology859.1 Mbps
25.Aerohive Networks1557.8 Mbps