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 (Nov 2019)

  ISP IPv6 tests count
1.Comcast Cable Communications, LLC5,624
2.Spectrum4,969
3.Cellco Partnership DBA Verizon Wireless3,217
4.AT&T Services, Inc.1,976
5.Hurricane Electric LLC1,896
6.Cox Communications Inc.927
7.Cloudflarewarp828
8.Google LLC822
9.Sprint676
10.CenturyLink Communications, LLC541
11.T-Mobile USA, Inc.540
12.AT&T Mobility LLC431
13.Mediacom Communications Corp279
14.Choopa246
15.QuadraNet Enterprises LLC164
16.Leaseweb USA, Inc.134
17.RamNode LLC116
18.Total Server Solutions L.L.C.114
19.DigitalOcean, LLC106
20.Google Fiber Inc.100
21.FranTech Solutions96
22.Multacom Corporation91
23.Condointernet.net84
24.H4Y Technologies LLC84
25.Cincinnati Bell Telephone Company LLC73

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, Nov 2019)

  ISP Unique IPv6 addresses
1.Comcast Cable Communications, LLC3,376
2.Cellco Partnership DBA Verizon Wireless2,721
3.Spectrum2,629
4.AT&T Services, Inc.1,155
5.Hurricane Electric LLC761
6.Cox Communications Inc.575
7.Cloudflarewarp448
8.T-Mobile USA, Inc.383
9.Sprint378
10.CenturyLink Communications, LLC311
11.AT&T Mobility LLC294
12.Mediacom Communications Corp199
13.Choopa146
14.Google LLC127
15.Google Fiber Inc.72
16.DigitalOcean, LLC51
17.Cincinnati Bell Telephone Company LLC44
18.Condointernet.net41
19.Google35
20.M247 Ltd33
21.Quintex Alliance Consulting28
22.Webpass Inc.28
23.Qualcomm27
24.Sonoma Interconnect26
25.Linode, LLC25

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 (Nov 2019)

  ISP Test count IPv4 IPv4 % IPv6 IPv6 %
1.Hotspotpr Broadband Internet700.0%7100.0%
2.Nynex700.0%7100.0%
3.AxcelX Technologies LLC5800.0%58100.0%
4.H4Y Technologies LLC8400.0%84100.0%
5.The Linux Fix4700.0%47100.0%
6.Kvchosting.com Llc6000.0%60100.0%
7.Tobias Maedel600.0%6100.0%
8.The Optimal Link Corporation4700.0%47100.0%
9.Joe's Datacenter, LLC6100.0%61100.0%
10.Atlas Networks Corporation800.0%8100.0%
11.Facebook Inc600.0%6100.0%
12.Enzu Inc1400.0%14100.0%
13.Cedric Rossius500.0%5100.0%
14.Wowrack.com5200.0%52100.0%
15.Greenlight Networks500.0%5100.0%
16.Hughes Network Systems2300.0%23100.0%
17.Telenet800.0%8100.0%
18.University of California at Berkeley500.0%5100.0%
19.Zdm Network Solutions Llc800.0%8100.0%
20.Lightspeed Communications600.0%6100.0%
21.Atlantic.net1200.0%12100.0%
22.Reliance Jio Infocomm Limited1400.0%14100.0%
23.Ken-Tenn Wireless LLC1900.0%19100.0%
24.WiscNet600.0%6100.0%
25.Reliance Jio Infocomm Ltd1400.0%14100.0%

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 (Nov 2019)

  ISP Test count IPv6 average
1.Google LLC822285.9 Mbps
2.Hurricane Electric9134.9 Mbps
3.Cincinnati Bell Telephone Company LLC73129.8 Mbps
4.Comcast Cable Communications, LLC5,624117.8 Mbps
5.Google54104.1 Mbps
6.Cogent Communications35103.8 Mbps
7.Direct Communications Cable LLC1397.6 Mbps
8.Spectrum4,96995.3 Mbps
9.CenturyLink Communications, LLC54194.8 Mbps
10.Midcontinent Communications3894.0 Mbps
11.Friendship Creative1986.0 Mbps
12.US Dedicated4985.1 Mbps
13.Webpass Inc.4383.0 Mbps
14.Monkey Brains1269.6 Mbps
15.Cox Communications Inc.92768.7 Mbps
16.AT&T Services, Inc.1,97666.3 Mbps
17.Flying Man Studio964.8 Mbps
18.Microsoft Corp1464.4 Mbps
19.Amazon.com1958.5 Mbps
20.Verizon Communications1957.6 Mbps
21.DigitalOcean, LLC10651.8 Mbps
22.Mediacom Communications Corp27949.0 Mbps
23.Hurricane Electric LLC1,89645.9 Mbps
24.Cellco Partnership DBA Verizon Wireless3,21745.5 Mbps
25.Starry1544.7 Mbps