IPv6 test - Statistics for 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 (Oct 2019)

	ISP	IPv6 tests count
1.	Spectrum	4,952
2.	Comcast Cable Communications, LLC	4,917
3.	Cellco Partnership DBA Verizon Wireless	3,212
4.	Hurricane Electric LLC	1,786
5.	AT&T Services, Inc.	1,459
6.	Cloudflarewarp	1,092
7.	M247 Ltd	813
8.	Cox Communications Inc.	781
9.	Google LLC	769
10.	Sprint	691
11.	Total Server Solutions L.L.C.	487
12.	Choopa	485
13.	CenturyLink Communications, LLC	453
14.	T-Mobile USA, Inc.	437
15.	QuadraNet Enterprises LLC	404
16.	AT&T Mobility LLC	332
17.	Mediacom Communications Corp	274
18.	tzulo, inc.	205
19.	M247 Ltd Cgnt	199
20.	Contina	168
21.	Leaseweb USA, Inc.	158
22.	WestHost, Inc.	153
23.	Google Fiber Inc.	130
24.	Frontier Communications Solutions	129
25.	DigitalOcean, LLC	108

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, Oct 2019)

	ISP	Unique IPv6 addresses
1.	Cellco Partnership DBA Verizon Wireless	2,813
2.	Comcast Cable Communications, LLC	2,801
3.	Spectrum	2,320
4.	AT&T Services, Inc.	855
5.	Hurricane Electric LLC	626
6.	Cox Communications Inc.	463
7.	Cloudflarewarp	460
8.	T-Mobile USA, Inc.	343
9.	AT&T Mobility LLC	234
10.	CenturyLink Communications, LLC	227
11.	Mediacom Communications Corp	168
12.	Sprint	156
13.	Choopa	125
14.	Google LLC	121
15.	Google Fiber Inc.	85
16.	DigitalOcean, LLC	43
17.	M247 Ltd	34
18.	Frontier Communications Solutions	32
19.	Emerald Onion	32
20.	Linode	30
21.	Webpass Inc.	30
22.	Qualcomm	29
23.	Condointernet.net	29
24.	Quintex Alliance Consulting	27
25.	Linode, LLC	24

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 (Oct 2019)

	ISP	Test count	IPv4 %	IPv6	IPv6 %
1.	DataShack, LC	10	0.0%	10	100.0%
2.	Wells Fargo & Company	13	0.0%	13	100.0%
3.	Bharti Airtel	20	0.0%	20	100.0%
4.	Tobias Maedel	12	0.0%	12	100.0%
5.	Enzu Inc	15	0.0%	15	100.0%
6.	Perfect International, Inc	9	0.0%	9	100.0%
7.	Handy Networks	54	0.0%	54	100.0%
8.	Starry	6	0.0%	6	100.0%
9.	Hancock Rural Telephone Corp.	8	0.0%	8	100.0%
10.	Hughes Network Systems	6	0.0%	6	100.0%
11.	University of Wisconsin Madison	6	0.0%	6	100.0%
12.	InterStar Network Services, Inc.	22	0.0%	22	100.0%
13.	StarHub-Ltd-NGNBN-Services	6	0.0%	6	100.0%
14.	Google	33	0.0%	33	100.0%
15.	Southern New England Telephone Company and SNET America, Inc.	9	0.0%	9	100.0%
16.	Wildcard Corp.	6	0.0%	6	100.0%
17.	Eonix Corporation	47	0.0%	47	100.0%
18.	University of California, San Diego	20	0.0%	20	100.0%
19.	AxcelX Technologies LLC	44	0.0%	44	100.0%
20.	The Optimal Link Corporation	49	0.0%	49	100.0%
21.	Gf-lax	12	0.0%	12	100.0%
22.	State University of New York at Buffalo	52	0.0%	52	100.0%
23.	Database by Design, LLC	62	0.0%	62	100.0%
24.	The Linux Fix	46	0.0%	46	100.0%
25.	Joe's Datacenter, LLC	51	0.0%	51	100.0%

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 (Oct 2019)

	ISP	Test count	IPv6 average
1.	Google LLC	769	468.3 Mbps
2.	Microsoft Corp	13	448.3 Mbps
3.	SoftLayer	5	170.3 Mbps
4.	University of Wisconsin Madison	6	152.8 Mbps
5.	Greenlight Networks	29	140.3 Mbps
6.	Mediacom Communications Corp	274	114.1 Mbps
7.	Verizon Communications	24	113.9 Mbps
8.	Comcast Cable Communications, LLC	4,917	100.6 Mbps
9.	Hurricane Electric	11	98.4 Mbps
10.	Spectrum	4,952	97.7 Mbps
11.	State University of New York at Buffalo	52	91.2 Mbps
12.	Cincinnati Bell Telephone Company LLC	29	85.3 Mbps
13.	Google Fiber Inc.	130	83.8 Mbps
14.	Cox Communications Inc.	781	72.6 Mbps
15.	AT&T Services, Inc.	1,459	64.9 Mbps
16.	Linode	38	62.5 Mbps
17.	MCI Communications Services, Inc. d/b/a Verizon Business	18	53.3 Mbps
18.	Google	33	49.3 Mbps
19.	CenturyLink Communications, LLC	453	46.6 Mbps
20.	Condointernet.net	54	44.2 Mbps
21.	Virginia Polytechnic Institute and State Univ.	13	40.1 Mbps
22.	Cloudflarewarp	1,092	34.0 Mbps
23.	T-Mobile USA, Inc.	437	33.2 Mbps
24.	Cisco Systems	14	32.8 Mbps
25.	Hurricane Electric LLC	1,786	31.8 Mbps