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 2019)

  ISP IPv6 tests count
1.Comcast Cable Communications, LLC4,523
2.Spectrum4,065
3.Cellco Partnership DBA Verizon Wireless2,576
4.Hurricane Electric LLC1,789
5.AT&T Services, Inc.1,400
6.Google LLC1,076
7.Cloudflarewarp973
8.Cox Communications Inc.711
9.Sprint601
10.T-Mobile USA, Inc.598
11.Choopa469
12.M247 Ltd428
13.CenturyLink Communications, LLC391
14.Mediacom Communications Corp362
15.AT&T Mobility LLC345
16.Micfo, LLC.234
17.tzulo, inc.223
18.Condointernet.net196
19.QuadraNet Enterprises LLC170
20.Leaseweb USA, Inc.165
21.RamNode LLC149
22.Total Server Solutions L.L.C.147
23.M247 Ltd Cgnt112
24.Google Fiber Inc.89
25.Contina83

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 2019)

  ISP Unique IPv6 addresses
1.Comcast Cable Communications, LLC2,649
2.Spectrum2,156
3.Cellco Partnership DBA Verizon Wireless2,133
4.AT&T Services, Inc.890
5.Hurricane Electric LLC776
6.Cloudflarewarp515
7.T-Mobile USA, Inc.435
8.Cox Communications Inc.408
9.AT&T Mobility LLC245
10.CenturyLink Communications, LLC241
11.Mediacom Communications Corp197
12.Sprint192
13.Choopa166
14.Google LLC150
15.Google Fiber Inc.63
16.Condointernet.net55
17.Quintex Alliance Consulting39
18.M247 Ltd36
19.DigitalOcean, LLC33
20.Frontier Communications Solutions33
21.Google32
22.Emerald Onion31
23.Sonoma Interconnect28
24.Cogent Communications28
25.IP6 SOLUTIONS d.o.o26

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 2019)

  ISP Test count IPv4 IPv4 % IPv6 IPv6 %
1.Joe's Datacenter, LLC3700.0%37100.0%
2.Handy Networks4800.0%48100.0%
3.The Optimal Link Corporation5300.0%53100.0%
4.Hosting Solution Ltd.7200.0%72100.0%
5.Nynex500.0%5100.0%
6.Marcel Andrew Zaiser trading as Metaliance ISP Systems e.k1300.0%13100.0%
7.H4Y Technologies LLC7000.0%70100.0%
8.Kvchosting.com Llc4200.0%42100.0%
9.Perfect International, Inc3100.0%31100.0%
10.State University of New York at Buffalo3300.0%33100.0%
11.Shock Hosting LLC700.0%7100.0%
12.Portage Public Schools500.0%5100.0%
13.Impulse Internet Services1200.0%12100.0%
14.The Linux Fix4000.0%40100.0%
15.CarolinaConnect Cooperative800.0%8100.0%
16.Caribbean Internet Service1000.0%10100.0%
17.Southern New England Telephone Company and SNET America, Inc.1400.0%14100.0%
18.Metaliance ISP Systems e.k700.0%7100.0%
19.AxcelX Technologies LLC5900.0%59100.0%
20.eNET Inc.6900.0%69100.0%
21.Zdm Network Solutions Llc700.0%7100.0%
22.Facebook Inc600.0%6100.0%
23.Google6911.4%6898.6%
24.Leaseweb USA, Inc.16531.8%16298.2%
25.RamNode LLC14942.7%14597.3%

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 2019)

  ISP Test count IPv6 average
1.Google LLC1,076505.6 Mbps
2.Verizon Communications20298.0 Mbps
3.Indiana University23200.0 Mbps
4.Mediacom Communications Corp362107.8 Mbps
5.Spectrum4,06598.0 Mbps
6.Comcast Cable Communications, LLC4,52397.8 Mbps
7.Cogent Communications4785.2 Mbps
8.Cox Communications Inc.71181.0 Mbps
9.tzulo, inc.22376.8 Mbps
10.AT&T Services, Inc.1,40075.9 Mbps
11.Linode3473.0 Mbps
12.CenturyLink Communications, LLC39168.9 Mbps
13.Google Fiber Inc.8965.7 Mbps
14.QuadraNet Enterprises LLC17064.3 Mbps
15.Cisco Systems1160.6 Mbps
16.Cincinnati Bell Telephone Company LLC3354.8 Mbps
17.Sonoma Interconnect5653.7 Mbps
18.American Registry Internet Numbers3949.8 Mbps
19.Hurricane Electric LLC1,78949.4 Mbps
20.Optimum Online1047.3 Mbps
21.Condointernet.net19640.9 Mbps
22.CloudFlare1036.8 Mbps
23.Netrouting Inc.5834.2 Mbps
24.Pavlov Media Inc629.5 Mbps
25.Cloudflarewarp97325.5 Mbps