Berkeley Internet Name Domain (BIND)

Time tested, reference implementation for serving DNS

I also evaluated one of your competitors, but when I saw them trumpeting the fact that they don't use BIND, as if BIND were a tool that no serious operation would use, I decided that they weren't the kind of company I could trust with my DNS.
-- Mike Schiraldi, DynDNS.com Customer

DynDNS.com exclusively uses the Berkeley Internet Name Domain (BIND), the reference implementation of the domain name system (DNS). It is the best tool for the job.

BIND is an open source product, made freely available by the Internet Software Consortium (ISC), which actively develops and maintains the software. ISC also hosts f.root-servers.net, one of the 13 Internet root servers.

Dynamic Network Services Inc. (Dyn Inc.) is also a member of the ISC BIND Forum.