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 (Sep 2020)

	ISP	IPv6 tests count
1.	Comcast Cable Communications, LLC	6,893
2.	Spectrum	6,400
3.	AT&T Services, Inc.	3,280
4.	Cellco Partnership DBA Verizon Wireless	3,055
5.	Hurricane Electric LLC	2,304
6.	Cox Communications Inc.	1,308
7.	Cloudflarewarp	1,098
8.	Google LLC	651
9.	T-Mobile USA, Inc.	637
10.	CenturyLink Communications, LLC	626
11.	Google Fiber Inc.	369
12.	AT&T Mobility LLC	354
13.	Mediacom Communications Corp	342
14.	American Registry Internet Numbers	298
15.	Choopa	204
16.	DigitalOcean, LLC	162
17.	Cogent Communications	139
18.	Sprint	133
19.	Verizon Communications	119
20.	SureWest Kansas Operations, LLC	103
21.	Frontier Communications Solutions	98
22.	Multacom Corporation	97
23.	M247 Ltd	94
24.	Midcontinent Communications	77
25.	Condointernet.net	73

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 2020)

	ISP	Unique IPv6 addresses
1.	Comcast Cable Communications, LLC	4,038
2.	Spectrum	3,195
3.	Cellco Partnership DBA Verizon Wireless	2,287
4.	AT&T Services, Inc.	2,042
5.	Hurricane Electric LLC	927
6.	Cox Communications Inc.	755
7.	Cloudflarewarp	603
8.	T-Mobile USA, Inc.	377
9.	CenturyLink Communications, LLC	332
10.	Mediacom Communications Corp	260
11.	AT&T Mobility LLC	250
12.	Google Fiber Inc.	206
13.	American Registry Internet Numbers	132
14.	Choopa	100
15.	Google LLC	73
16.	Verizon Communications	72
17.	Sprint	63
18.	M247 Ltd	53
19.	Cogent Communications	51
20.	Cincinnati Bell Telephone Company LLC	39
21.	Chinanet	39
22.	DigitalOcean, LLC	34
23.	Condointernet.net	33
24.	Frontier Communications Solutions	32
25.	Midcontinent Communications	31

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 2020)

	ISP	Test count	IPv4	IPv4 %	IPv6	IPv6 %
1.	Hancock Rural Telephone Corp.	10	0	0.0%	10	100.0%
2.	NetSource Communications	48	0	0.0%	48	100.0%
3.	Nynex	7	0	0.0%	7	100.0%
4.	TELUS Communications Inc	20	0	0.0%	20	100.0%
5.	Wells Fargo & Company	9	0	0.0%	9	100.0%
6.	Sumofiber	5	0	0.0%	5	100.0%
7.	AT&T Global Network Services	6	0	0.0%	6	100.0%
8.	GTHost	17	0	0.0%	17	100.0%
9.	Hetzner	10	0	0.0%	10	100.0%
10.	Motherboard Express Company	5	0	0.0%	5	100.0%
11.	Arachnitec, INC.	9	0	0.0%	9	100.0%
12.	NightRise LLC	16	0	0.0%	16	100.0%
13.	Easton Utilities Commission	14	0	0.0%	14	100.0%
14.	Zayo Bandwidth	7	0	0.0%	7	100.0%
15.	Tierzero	5	0	0.0%	5	100.0%
16.	Sprious LLC	7	0	0.0%	7	100.0%
17.	University of California, San Diego	6	0	0.0%	6	100.0%
18.	Dot Enterprise Co.	5	0	0.0%	5	100.0%
19.	Facebook, Inc.	10	0	0.0%	10	100.0%
20.	Microsoft Corp	6	0	0.0%	6	100.0%
21.	Gf-lax	14	0	0.0%	14	100.0%
22.	Centrilogic, Inc.	5	0	0.0%	5	100.0%
23.	Sprint	133	4	3.0%	129	97.0%
24.	Google	30	1	3.3%	29	96.7%
25.	OzarksGo, LLC	25	1	4.0%	24	96.0%

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 (Sep 2020)

	ISP	Test count	IPv6 average
1.	Amazon Technologies Inc	20	455.0 Mbps
2.	State University of New York at Buffalo	11	384.1 Mbps
3.	Verizon Communications	119	219.9 Mbps
4.	Google Fiber Inc.	369	144.8 Mbps
5.	Twin Lakes Telephone Cooperative Corporation	8	132.1 Mbps
6.	Condointernet.net	73	130.1 Mbps
7.	Total Server Solutions L.L.C.	40	128.0 Mbps
8.	Comcast Cable Communications, LLC	6,893	116.8 Mbps
9.	Spectrum	6,400	113.3 Mbps
10.	Mediacom Communications Corp	342	107.0 Mbps
11.	Centrilogic, Inc.	5	104.6 Mbps
12.	Cox Communications Inc.	1,308	103.2 Mbps
13.	tzulo, inc.	37	99.1 Mbps
14.	Monkey Brains	16	84.8 Mbps
15.	Cogent Communications	139	82.4 Mbps
16.	Linode, LLC	36	80.8 Mbps
17.	AT&T Services, Inc.	3,280	73.0 Mbps
18.	WideOpenWest Finance LLC	27	70.5 Mbps
19.	EPB Fiber Optics	7	67.9 Mbps
20.	Amazon.com	19	67.8 Mbps
21.	Sumofiber	5	59.0 Mbps
22.	Google LLC	651	59.0 Mbps
23.	Hurricane Electric LLC	2,304	58.0 Mbps
24.	Cincinnati Bell Telephone Company LLC	64	56.0 Mbps
25.	Digitalocean	55	55.7 Mbps