AT&T IPv6 Support - IPv4 vs. IPv6, Equipment & Compatibility Information

What is AT&T’s Plan for IPv6?

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AT&T has been planning for the IPv6 transition for several years, and we are on track for the full transition. Here are some steps we’re taking:

  • Enabling our IP backbone network to support IPv6
  • Offering dual-stack IPv4/IPv6 services to enterprise customers since June 2009
  • Enabling our MIS and AVPN services to be IPv6-capable
  • Supporting IPv6 over domestic peering links

IPv4 and IPv6 will co-exist for a long time. This means existing Internet customers should see no impact once this transaction begins. We have several methods in place to effectively manage the transition to extend the life of existing networks:

  • Dual stack, which allows IPv4 and IPv6 to co-exist in the same devices and networks.
  • Tunneling, which allows IPv6 packets to be transmitted over an IPv4 infrastructure – and vice-versa. When IPv6 becomes the more prevalent network this will not be required.
  • Translation, which allows IPv6-only devices to communicate with IPv4-only devices.

As AT&T officially began supporting IPv6 in 2011, it’s important to note that the transition will be invisible to you. Our plans will enable you to continue to access the Internet and your email without any change in your user experience.

Do I Need to be IPv6-“Ready” by a Certain Date?

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No. The transition to IPv6 will roll out over a period of years. You will only need to be ready when you attempt to access Internet content that happens to be available via IPv6 only. This may not occur for several years and AT&T has you covered.

IPv6 Equipment Compatibility Table

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This table shows the Operating Systems and AT&T provided modems, routers and gateways that support IPv6. If you are using an operating system or device that is not shown, you will need to upgrade your software and/or equipment in order to access content that is delivered only over IPv6.

IPv6 compatible Operating Systems

Microsoft (PC)

  • Windows XP Service Pack 3 and above
  • Windows Vista
  • Windows 7
  • Windows 8

Macintosh (Mac)

  • OS 10.6.7 and above

Note: You may need to take steps to enable IPv6 for your IPv6 compatible operating system. Contact the manufacturer for detailed instructions.

IPv6 compatible Modems, Routers, and Gateways

If you have one of the devices shown below, it will be IPv6-enabled through an automatic firmware update *.

AT&T DSL High Speed Internet

  • Motorola 3360
  • Netgear 6200 A90
  • Netgear 7550 B90
  • Pace 4111 N

* For DSL customers who do not have one of the devices listed above, IPv6-compatible devices are now available for purchase in the AT&T Equipment Shop.

AT&T U-verse High Speed Internet

  • 2Wire/Pace 3600
  • 2Wire/Pace 3800
  • 2Wire/Pace 3801
  • 2Wire/Pace 5031
  • 2Wire/Pace 5168
  • 2Wire/Pace i38HG
  • Motorola NVG510
  • Motorola NVG589

* If you have a Motorola 2210 or 2Wire 2701 device and you want to upgrade to an IPv6-capable device, visit the AT&T Equipment Shop.

Note: To determine your device's model number, consult the device information sticker on the back of your device. For non-AT&T provided modems/routers/gateways, please check with equipment manufacturer.

DSL High Speed Internet

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The following DSL High Speed Internet devices support IPv6. If you have one of these models you don't need to take any steps for your equipment to become IPv6-capable.

Devices supporting IPv6

  • Motorola 3360
  • Netgear 6200 A90 (Compatible now)
  • Netgear 7550 B90 (Compatible now)
  • Pace 4111N

All other AT&T-provided DSL modems, routers and gateways do not support IPv6.

If you have any AT&T-provided device other than those listed above, and you want to upgrade to an IPv6-capable device, visit the AT&T Equipment Shop.

Note: To determine your device's model number, consult the device information sticker on the back of your device.

DSL High Speed Internet devices

U-verse High Speed Internet

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Most U-verse Residential Gateways are IPv6-capable and automatic firmware updates will be pushed to those devices when IPv6 is deployed in your service area.

IPv6-capable devices

  • 2Wire/Pace 3600
  • 2Wire/Pace 3800
  • 2Wire/Pace 3801
  • 2Wire/Pace i38HG
  • Motorola NVG510 (Compatible now)

Devices not supporting IPv6

  • Motorola 2210
  • 2Wire 2701

If you have a Motorola 2210 or 2Wire 2701 device and you want to upgrade to an IPv6-capable device, visit the AT&T Equipment Shop.

Note: To determine your device's model number, consult the device information sticker on the back of your device.

DSL High Speed Internet devices
IPv6 - The Internet is Getting Bigger...and AT&T is Ready

AT&T is prepared for IPv6 across our products, services, and network infrastructure for all of our customers. Most customers will not need to take any action for IPv6 – AT&T has you covered.
To learn more about IPv6, select from the 5 topics below.

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IPv4 vs. IPv6

Every device and Web site on the Internet needs an address, known
as an Internet Protocol (IP) address, in order to communicate.

  • Today's Internet address scheme (IPv4) supports approximately 4 billion unique addresses.
  • The new address scheme (IPv6) will provide a virtually unlimited number of IP addresses.
  • The full transition to IPv6 will occur slowly.
  • Web sites you visit will appear the same, whether hosted by IPv4 or IPv6 addresses.
  • Existing devices and networks connected to the Internet will continue to work as they do now.


Preparing for IPv6

In the coming years, the entire Internet ecosystem will need to transition to IPv6. AT&T has already developed and implemented plans to enable IPv6 across our products, services, and network infrastructure for all of our customers.

Residential and Small Business Internet Service Customers

You should not need to take any action to prepare for IPv6. Over time, new and replacement home modems, routers, and gateways, peripherals, applications, and operating systems will be enabled to be IPv6 compatible.

Enterprise Networks and Applications

AT&T's IP backbone network supports IPv6 today, and we are offering enterprise services that support IPv6.

Test a Web site for IPv6

Determine whether a specific Web site supports IPv6, IPv4, or both.

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Enterprise Solutions

AT&T consultants can help
you convert or upgrade
your systems.

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