Amazon Route 53 - Amazon Route 53 is a highly available and scalable DNS web service.
SnapNames - SnapNames.com is the largest Domain Name Auction marketplace. Buy Domains even if they are already registered or Sell Domains Names by listing them in our daily marketplace.
GoDaddy DNS - GoDaddy DNS helps manage website performance, reliability and security.
NameBright - NameBright is an all-in-one featured rich domain registration platform, providing ease of check out, affordability, and dispensing leverage of the domain management tool.
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.
NameSilo - Domain registration. That's it! And that's what makes it special.