We’ve reached another milestone in the deployment of DNSSEC.  Jason Livingood from Comcast writes:

I am pleased to announce that Comcast, the largest ISP in the U.S., is the first large ISP in the North America to have fully implemented Domain Name System Security Extensions (DNSSEC). As part of our ongoing efforts to protect our customers, DNSSEC is now automatically included as part of Comcast Constant Guard™ from Xfinity.

Read more on the Comcast Blog.