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 2019)

  ISP IPv6 tests count
1.Comcast Cable Communications, LLC5,053
2.Spectrum4,910
3.Cellco Partnership DBA Verizon Wireless4,014
4.Hurricane Electric LLC2,306
5.AT&T Services, Inc.1,574
6.Cox Communications Inc.930
7.Google LLC762
8.CenturyLink Communications, LLC585
9.T-Mobile USA, Inc.535
10.Sprint531
11.DigitalOcean, LLC402
12.Choopa321
13.AT&T Mobility LLC300
14.RamNode LLC155
15.Google Fiber Inc.154
16.Mediacom Communications Corp143
17.Leaseweb USA, Inc.131
18.Qualcomm127
19.QuadraNet Enterprises LLC122
20.Amazon.com72
21.Amazon Technologies Inc70
22.H4Y Technologies LLC70
23.Midcontinent Communications64
24.The Linux Fix62
25.Linode, LLC61

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 2019)

  ISP Unique IPv6 addresses
1.Cellco Partnership DBA Verizon Wireless3,232
2.Comcast Cable Communications, LLC2,979
3.Spectrum2,428
4.AT&T Services, Inc.849
5.Hurricane Electric LLC765
6.Cox Communications Inc.532
7.Sprint400
8.T-Mobile USA, Inc.385
9.CenturyLink Communications, LLC323
10.AT&T Mobility LLC214
11.Choopa143
12.Google LLC125
13.Google Fiber Inc.101
14.Mediacom Communications Corp100
15.DigitalOcean, LLC89
16.Qualcomm66
17.RamNode LLC44
18.Quintex Alliance Consulting39
19.Midcontinent Communications28
20.Frontier Communications Solutions27
21.Google26
22.Chinanet26
23.Webpass Inc.24
24.Ovh Sas23
25.State University of New York at Buffalo21

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 2019)

  ISP Test count IPv4 IPv4 % IPv6 IPv6 %
1.Nynex1200.0%12100.0%
2.QuickPacket3500.0%35100.0%
3.eNET Inc.3500.0%35100.0%
4.Eonix Corporation4200.0%42100.0%
5.The Linux Fix6200.0%62100.0%
6.Ovh Sas5900.0%59100.0%
7.Handy Networks4500.0%45100.0%
8.Akamai Technologies, Inc.800.0%8100.0%
9.WholeSale Internet, Inc.3800.0%38100.0%
10.Netrouting Inc.5600.0%56100.0%
11.Zdm Network Solutions Llc600.0%6100.0%
12.AT&T Services700.0%7100.0%
13.AxcelX Technologies LLC3900.0%39100.0%
14.Google3000.0%30100.0%
15.Wowrack.com4700.0%47100.0%
16.Centrilogic, Inc.900.0%9100.0%
17.Internet21700.0%17100.0%
18.Kvchosting.com Llc4700.0%47100.0%
19.Merit Network Inc.700.0%7100.0%
20.The Optimal Link Corporation3400.0%34100.0%
21.Contina500.0%5100.0%
22.Wells Fargo & Company1500.0%15100.0%
23.Hughes Network Systems900.0%9100.0%
24.University of Pittsburgh600.0%6100.0%
25.H4Y Technologies LLC7011.4%6998.6%

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 2019)

  ISP Test count IPv6 average
1.Google LLC762661.4 Mbps
2.Greenlight Networks13206.3 Mbps
3.Midcontinent Communications64199.7 Mbps
4.State University of New York at Buffalo52117.9 Mbps
5.Hurricane Electric25116.5 Mbps
6.Spectrum4,91099.5 Mbps
7.Comcast Cable Communications, LLC5,05395.6 Mbps
8.CenturyLink Communications, LLC58587.0 Mbps
9.Cox Communications Inc.93070.6 Mbps
10.AT&T Services, Inc.1,57468.9 Mbps
11.Mediacom Communications Corp14359.0 Mbps
12.Cable One858.1 Mbps
13.Linode, LLC6157.2 Mbps
14.Comcast Cable Communications1148.8 Mbps
15.Cincinnati Bell Telephone Company LLC2447.2 Mbps
16.Webpass Inc.3744.8 Mbps
17.Hurricane Electric LLC2,30642.1 Mbps
18.Sprint53137.9 Mbps
19.M247 Ltd3632.8 Mbps
20.Choopa32132.6 Mbps
21.Google Fiber Inc.15430.1 Mbps
22.Cellco Partnership DBA Verizon Wireless4,01429.1 Mbps
23.AT&T Mobility LLC30028.6 Mbps
24.Database by Design, LLC4825.7 Mbps
25.IFX Corporation3925.4 Mbps