Amazon Route 53 - Amazon Route 53 is a highly available and scalable DNS web service.
Comodo Secure DNS - Comodo Secure DNS is the leading DNS provider. We offer Managed DNS, Enterprise DNS, Authoritative, Anycast and CDN DNS hosting.
GoDaddy DNS - GoDaddy DNS helps manage website performance, reliability and security.
OpenDNS - OpenDNS provides faster and safer Internet access for your home or Business.
DNSimple - Domain Name Service with low cost hosted DNS, an easy to use web interface, and a REST API for automation. Hosting DNS has never been so simple.
FreeDNS by Afraid.org - Free DNS hosting, lets you fully manage your own domain. Dynamic DNS and Static DNS services available. You may also create hosts off other domains that we host upon the domain owners consent, we have several domains to choose from!