Nov 26, 2013

Comcast’s Xfinity Internet Now the World’s Largest Native IPv6 Deployment

Over the past few years we have shared updates on our IPv6 efforts, especially milestones that enhance the quality of our services.  Today, Comcast’s Xfinity Internet native IPv6 deployment has grown to become the world’s largest IPv6 deployment, as measured by the Internet Society’s World IPv6 Launch Measurements.

The Internet Society (ISOC) measures deployment using several data sources, including data from Google, Facebook, Yahoo, and Akamai. So this is not only a measurement of the percentage of network equipment that is enabled for native IPv6, but more importantly the number of people actively using native IPv6 on a day to day basis.

Comcast IPv6

In just over three months our deployment has grown from third to first.  A critical factor in that growth was the launch of IPv6 support for the ARRIS Touchstone Telephony Wireless Gateway Modem (TG852G and TG862G) that brought IPv6 to over four million customers.  Additionally, Comcast has been working closely with Cisco Systems to ready their uBR10000 Cable Modem Termination System (CMTS), which has contributed to the expanded deployment of IPv6 support across Comcast’s broadband network. Thus, this milestone is not only one for Comcast; it is one for the cable industry, our suppliers, and the Internet in general.  

Today, over 25% (and growing) of Comcast’s Xfinity Internet customers are actively provisioned with native dual stack broadband Internet service.  Native IPv6 support has been deployed to over 75% of our broadband network, and our goal is 100% in early 2014. 

For more information about Comcast’s IPv6 efforts please visit,

Tags : Internet Society, IPv6


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