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 2020)

	ISP	IPv6 tests count
1.	Comcast Cable Communications, LLC	6,183
2.	Spectrum	5,560
3.	AT&T Services, Inc.	3,037
4.	Cellco Partnership DBA Verizon Wireless	2,687
5.	Hurricane Electric LLC	1,700
6.	Cloudflarewarp	1,195
7.	Cox Communications Inc.	1,085
8.	T-Mobile USA, Inc.	575
9.	Google LLC	465
10.	AT&T Mobility LLC	437
11.	Ets Telephone Company	396
12.	CenturyLink Communications, LLC	373
13.	Mediacom Communications Corp	300
14.	American Registry Internet Numbers	228
15.	Google Fiber Inc.	216
16.	Choopa	202
17.	Garrison Network Solutions LLC	96
18.	Cincinnati Bell Telephone Company LLC	75
19.	Cogent Communications	66
20.	Multacom Corporation	63
21.	Qualcomm	59
22.	Frontier Communications Solutions	58
23.	Midcontinent Communications	55
24.	Total Server Solutions L.L.C.	50
25.	Verizon Communications	49

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 2020)

	ISP	Unique IPv6 addresses
1.	Comcast Cable Communications, LLC	3,633
2.	Spectrum	2,789
3.	Cellco Partnership DBA Verizon Wireless	2,172
4.	AT&T Services, Inc.	1,861
5.	Hurricane Electric LLC	700
6.	Cox Communications Inc.	609
7.	Cloudflarewarp	572
8.	T-Mobile USA, Inc.	413
9.	AT&T Mobility LLC	308
10.	Mediacom Communications Corp	245
11.	CenturyLink Communications, LLC	220
12.	Google Fiber Inc.	137
13.	Choopa	109
14.	American Registry Internet Numbers	99
15.	Google LLC	85
16.	Qualcomm	50
17.	Cogent Communications	46
18.	Midcontinent Communications	39
19.	Verizon Communications	38
20.	M247 Ltd	38
21.	Cincinnati Bell Telephone Company LLC	38
22.	Frontier Communications Solutions	35
23.	So-net Entertainment Corporation	29
24.	Google	26
25.	Condointernet.net	26

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 2020)

	ISP	Test count	IPv4	IPv4 %	IPv6	IPv6 %
1.	Sumofiber	8	0	0.0%	8	100.0%
2.	OzarksGo, LLC	7	0	0.0%	7	100.0%
3.	State University of New York at Buffalo	17	0	0.0%	17	100.0%
4.	Zichao Heng	5	0	0.0%	5	100.0%
5.	DTAG European region	6	0	0.0%	6	100.0%
6.	AT&T Global Network Services	12	0	0.0%	12	100.0%
7.	Microsoft Corp	12	0	0.0%	12	100.0%
8.	Nynex	10	0	0.0%	10	100.0%
9.	Unitymedia	5	0	0.0%	5	100.0%
10.	Upc Nl	7	0	0.0%	7	100.0%
11.	Reliance Jio Infocomm Limited	8	0	0.0%	8	100.0%
12.	Ncnet	5	0	0.0%	5	100.0%
13.	Level 3 Communications, Inc.	15	0	0.0%	15	100.0%
14.	Hughes Network Systems	18	0	0.0%	18	100.0%
15.	KabelBW	5	0	0.0%	5	100.0%
16.	Contabo GmbH	23	0	0.0%	23	100.0%
17.	Cstnet	17	0	0.0%	17	100.0%
18.	Fortinet Inc.	7	0	0.0%	7	100.0%
19.	Accuserv Inc	5	0	0.0%	5	100.0%
20.	Google	41	1	2.4%	40	97.6%
21.	Southern New England Telephone Company and SNET America, Inc.	21	1	4.8%	20	95.2%
22.	Symantec Corporation	17	1	5.9%	16	94.1%
23.	Internet Assigned Numbers Authority	49	3	6.1%	46	93.9%
24.	iFog GmbH	16	1	6.3%	15	93.8%
25.	Sprint	32	2	6.3%	30	93.8%

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 2020)

	ISP	Test count	IPv6 average
1.	tzulo, inc.	27	304.1 Mbps
2.	Google LLC	465	289.5 Mbps
3.	Google Fiber Inc.	216	159.5 Mbps
4.	Cincinnati Bell Telephone Company LLC	75	135.0 Mbps
5.	Cox Communications Inc.	1,085	111.5 Mbps
6.	Mediacom Communications Corp	300	111.1 Mbps
7.	Spectrum	5,560	111.1 Mbps
8.	Comcast Cable Communications, LLC	6,183	110.6 Mbps
9.	American Registry Internet Numbers	228	101.9 Mbps
10.	Cable One	5	100.1 Mbps
11.	Condointernet.net	34	95.3 Mbps
12.	Choopa	202	86.2 Mbps
13.	Google	41	85.7 Mbps
14.	AT&T Services, Inc.	3,037	85.3 Mbps
15.	Cogent Communications	66	77.4 Mbps
16.	Monkey Brains	23	61.0 Mbps
17.	Sonoma Interconnect	20	60.8 Mbps
18.	Hancock Rural Telephone Corp.	22	60.6 Mbps
19.	RamNode LLC	11	60.5 Mbps
20.	Veroxity Technology Partners	5	58.3 Mbps
21.	Midcontinent Communications	55	58.1 Mbps
22.	CenturyLink Communications, LLC	373	53.6 Mbps
23.	Verizon Communications	49	53.0 Mbps
24.	Cloudflarewarp	1,195	49.8 Mbps
25.	Amazon.com	7	49.6 Mbps