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 2023)

	ISP	IPv6 tests count
1.	Comcast Cable Communications, LLC	1,942
2.	AT&T Services, Inc.	1,280
3.	Charter Communications Inc	962
4.	Verizon Business	958
5.	Hurricane Electric LLC	574
6.	T-Mobile USA, Inc.	492
7.	Charter Communications	488
8.	Cox Communications Inc.	320
9.	I-Evolve Technology Services	250
10.	Cloudflare, Inc.	238
11.	SpaceX Starlink	222
12.	CenturyLink Communications, LLC	157
13.	The Constant Company	153
14.	Google Fiber Inc.	144
15.	Charter Communications, Inc	113
16.	Google LLC	77
17.	Cincinnati Bell Telephone Company LLC	74
18.	M247 Europe SRL	73
19.	The Constant Company, LLC	69
20.	Akamai Technologies, Inc.	62
21.	Cloudie Networks	48
22.	SoftLayer	44
23.	Google, LLC	40
24.	AT&T Mobility LLC	39
25.	Chinanet	36

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 2023)

	ISP	Unique IPv6 addresses
1.	Comcast Cable Communications, LLC	1,082
2.	AT&T Services, Inc.	733
3.	Charter Communications Inc	570
4.	Verizon Business	535
5.	T-Mobile USA, Inc.	348
6.	Hurricane Electric LLC	323
7.	Charter Communications	299
8.	Cloudflare, Inc.	203
9.	Cox Communications Inc.	196
10.	I-Evolve Technology Services	137
11.	SpaceX Starlink	133
12.	Google Fiber Inc.	78
13.	CenturyLink Communications, LLC	77
14.	Charter Communications, Inc	70
15.	The Constant Company	56
16.	Akamai Technologies, Inc.	48
17.	AT&T Mobility LLC	31
18.	Cincinnati Bell Telephone Company LLC	31
19.	Google, LLC	30
20.	M247 Europe SRL	26
21.	Google LLC	26
22.	Ericsson Inc.	25
23.	Chinanet	24
24.	Mediacom Communications Corp	22
25.	HERN Labs AB	21

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.

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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 2023)

	ISP	Test count	IPv4	IPv4 %	IPv6	IPv6 %
1.	Kurun Cloud Inc	14	0	0.0%	14	100.0%
2.	Leaseweb USA	7	0	0.0%	7	100.0%
3.	Xipe Networks	6	0	0.0%	6	100.0%
4.	Netfee	11	0	0.0%	11	100.0%
5.	The Constant Company, LLC	69	2	2.9%	67	97.1%
6.	The Constant Company	153	8	5.2%	145	94.8%
7.	Rogers Communications Canada Inc.	7	1	14.3%	6	85.7%
8.	Datacamp Limited	11	2	18.2%	9	81.8%
9.	Contabo Inc.	25	5	20.0%	20	80.0%
10.	HERN Labs AB	29	7	24.1%	22	75.9%
11.	Greenlight Networks, LLC	12	3	25.0%	9	75.0%
12.	Subrigo Corporation	16	4	25.0%	12	75.0%
13.	MoeKuu LLC	7	2	28.6%	5	71.4%
14.	Zayo Bandwidth	21	6	28.6%	15	71.4%
15.	Ovh Sas	14	4	28.6%	10	71.4%
16.	tzulo, inc.	18	6	33.3%	12	66.7%
17.	Google Fiber Inc.	144	48	33.3%	96	66.7%
18.	Cincinnati Bell Telephone Company LLC	74	25	33.8%	49	66.2%
19.	Fastly, Inc.	20	7	35.0%	13	65.0%
20.	AT&T Mobility LLC	39	14	35.9%	25	64.1%
21.	Mediacom Communications Corp	24	9	37.5%	15	62.5%
22.	Hetzner Online GmbH	16	6	37.5%	10	62.5%
23.	Charter Communications	488	183	37.5%	305	62.5%
24.	Charter Communications Inc	962	362	37.6%	600	62.4%
25.	Cloudflare, Inc.	238	90	37.8%	148	62.2%

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 2023)

	ISP	Test count	IPv6 average
1.	Charter Communications	488	168.8 Mbps
2.	Comcast Cable Communications, LLC	1,942	132.6 Mbps
3.	Verizon Business	958	126.7 Mbps
4.	AT&T Services, Inc.	1,280	124.3 Mbps
5.	CenturyLink Communications, LLC	157	115.4 Mbps
6.	Charter Communications, Inc	113	113.9 Mbps
7.	Google Fiber Inc.	144	108.6 Mbps
8.	Charter Communications Inc	962	99.7 Mbps
9.	Cloudie Networks	48	92.3 Mbps
10.	Performive LLC	15	91.7 Mbps
11.	I-Evolve Technology Services	250	89.7 Mbps
12.	Cox Communications Inc.	320	82.9 Mbps
13.	Cincinnati Bell Telephone Company LLC	74	82.3 Mbps
14.	Cloudflare, Inc.	238	75.1 Mbps
15.	American Registry Internet Numbers	5	72.9 Mbps
16.	AT&T Mobility LLC	39	72.9 Mbps
17.	Linode	13	65.2 Mbps
18.	T-Mobile USA, Inc.	492	63.0 Mbps
19.	Cogent Communications	5	59.3 Mbps
20.	Hurricane Electric LLC	574	57.1 Mbps
21.	SpaceX Starlink	222	57.1 Mbps
22.	Multacom Corporation	30	47.4 Mbps
23.	United Electric Cooperative	6	42.8 Mbps
24.	Microsoft Corporation	16	42.2 Mbps
25.	Akamai Technologies, Inc.	62	36.1 Mbps

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