IPv6 – Internet Protocol version 6

IPv6 – Internet Protocol version 6

The Internet is growing … and AT&T is ready  


IPv6 is making room

Everything that connects to the Internet has to have its own unique Internet Protocol (IP) address. Think of an IP address as a phone number that websites and devices use to communicate with each other.

But as more and more people use smart devices, and the Internet of Things picks up speed, we’re running out of IPv4 addresses.

That’s where IPv6 came in. It created almost limitless addresses.

The transition to IPv6 started years ago. But no worries. You probably won’t have to do anything. We’ve got you covered.


All about IPv6

Bigger Internet. More addresses. 

The Internet isn’t just for computers and websites anymore. Now everything from cars to cameras to home thermostats are online. And they all have to have their own IP addresses.

IPv4 doesn’t have enough addresses to go around. But IPv6 sure does. It has about 340 undecillion IP addresses. That’s more than all the grains of sand on all the beaches on Earth!

AT&T is ready

In the past, all IP addresses were IPv4 addresses. But, in the future most new devices and websites will use IPv6. That’s why we started changing our products, services, and network infrastructure years ago.

We’re ready, and we want you to be, too.

Learn more

Are you IPv6-ready?

If you have AT&T Internet services, you can use this tool to check your IPv6 compatibility.

What IP addresses do your favorite websites use?

See if a site supports IPv6, IPv4, or both.