Amazon Route 53 - Amazon Route 53 is a highly available and scalable DNS web service.
Cloudflare DNS - Install the free app that makes your phone’s Internet more fast, private, and reliable.
ClouDNS - ClouDNS is a platform that allows users to keep their websites, data, and network security all the time.
GoDaddy Premium DNS - Sell your domain name in the Premium Domain Names section of the domain search page of the world's largest Domain Name Registrar - GoDaddy.
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.
Azure DNS - Azure DNS is a hosting service for DNS domains, providing name resolution using Microsoft Azure infrastructure.