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This site provides you with the Comcast DNS server status, IP addresses, and troubleshooting tools. As part of our ongoing efforts to protect our customers and provide great security features, DNSSEC validation is now included as part of Comcast Constant Guard™ from Xfinity.

.gov Failing DNSSEC Validation

Posted by Comcast
Comcast Corporation (Nasdaq: CMCSA, CMCSK) (www.comcast.com) is one of the world’s leading media, entertainmen...
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on June 27, 2012
in DNSSEC News

The .gov zone is having DNSSEC validation issues because there are expired rrsig records on some of their name servers. This has caused all domains within .gov (eg. IRS.gov) to not be reachable. We have notified the domain operator regarding the issue. Comcast will be implementing a Negative Trust Anchor to allow the domain operator time to correct the issue. This will be removed July 6, 2012. Although we are utilizing a Negative Trust Anchor, the responsibility for properly configured DNS records lies with domain administrators.

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