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 (Jun 2018)

  ISP IPv6 tests count
1.Comcast Cable Communications26,127
2.Spectrum20,097
3.Google LLC15,381
4.Google Inc.7,700
5.Cellco Partnership DBA Verizon Wireless6,729
6.AT&T Internet Services6,225
7.Cox Communications Inc.5,403
8.Hurricane Electric5,134
9.CenturyLink3,465
10.Hurricane Electric LLC3,179
11.AT&T Mobility LLC2,030
12.T-Mobile USA1,618
13.Choopa1,508
14.Charter Communications1,469
15.Mediacom Communications Corp1,122
16.Sprint1,027
17.Digital Ocean684
18.Google Fiber Inc.582
19.Linode573
20.IT7 Networks Inc398
21.Midcontinent Communications288
22.Sonic.net288
23.Road Runner265
24.AT&T Services261
25.QuadraNet252

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, Jun 2018)

  ISP Unique IPv6 addresses
1.Comcast Cable Communications15,532
2.Spectrum10,601
3.Cellco Partnership DBA Verizon Wireless5,130
4.AT&T Internet Services3,656
5.Cox Communications Inc.3,041
6.Hurricane Electric2,472
7.Hurricane Electric LLC1,676
8.CenturyLink1,543
9.T-Mobile USA1,205
10.AT&T Mobility LLC1,201
11.Charter Communications793
12.Sprint646
13.Mediacom Communications Corp612
14.Choopa546
15.Google Fiber Inc.362
16.Digital Ocean224
17.AT&T Services209
18.Google LLC169
19.Road Runner166
20.Midcontinent Communications166
21.IT7 Networks Inc165
22.Linode152
23.Google Inc.150
24.Arris Group141
25.Internet Assigned Numbers Authority128

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 (Jun 2018)

  ISP Test count IPv4 IPv4 % IPv6 IPv6 %
1.GigaMonster700.0%7100.0%
2.Indiana University1200.0%12100.0%
3.Lty Connect500.0%5100.0%
4.National Aeronautics and Space Administration2100.0%21100.0%
5.The Optimal Link Corporation700.0%7100.0%
6.Rogers Communications Canada Inc.600.0%6100.0%
7.State University of New York at Stony Brook1400.0%14100.0%
8.Facebook Ireland Ltd1400.0%14100.0%
9.OJSC "ER-Telecom" Perm'1300.0%13100.0%
10.CJSC "ER-Telecom Holding" Penza branch500.0%5100.0%
11.Wells Fargo & Company800.0%8100.0%
12.Sam Houston State University500.0%5100.0%
13.University of Hawaii900.0%9100.0%
14.Reliance Jio Infocomm Ltd2100.0%21100.0%
15.Japan Network Information Center700.0%7100.0%
16.University of Minnesota500.0%5100.0%
17.NetAssist3900.0%39100.0%
18.Han's HAN (Home Area Network) - West Lafayette - Cary Quad500.0%5100.0%
19.Akrf500.0%5100.0%
20.Hostkey900.0%9100.0%
21.Midcontinent Media700.0%7100.0%
22.Upc At800.0%8100.0%
23.Interserver500.0%5100.0%
24.ARIN Operations500.0%5100.0%
25.Google1200.0%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 (Jun 2018)

  ISP Test count IPv6 average
1.Perfect International9776.0 Mbps
2.Google LLC15,381372.8 Mbps
3.Merit Network Inc.7358.5 Mbps
4.Google Inc.7,700311.8 Mbps
5.University of Michigan16295.8 Mbps
6.University of Colorado Denver6267.0 Mbps
7.Crystal Automation Systems Inc9222.3 Mbps
8.Consolidated Communications21203.7 Mbps
9.Custom Software Inc5200.1 Mbps
10.State University of New York at Buffalo136173.5 Mbps
11.GigaMonster7172.8 Mbps
12.Greenlight Networks23151.9 Mbps
13.Tech Valley Communications7149.6 Mbps
14.Clemson University10148.2 Mbps
15.Google Fiber Inc.582143.6 Mbps
16.Sam Houston State University5142.1 Mbps
17.ColoCrossing5136.8 Mbps
18.CubedHost13129.9 Mbps
19.Georgia Institute of Technology32127.0 Mbps
20.WiscNet8118.6 Mbps
21.Astound Broadband LLC53117.7 Mbps
22.Washington State K-20 Telecommunications Network15116.7 Mbps
23.Road Runner265114.2 Mbps
24.vanoppen.biz LLC7111.2 Mbps
25.Mediacom Communications Corp1,122108.9 Mbps