Domainz.io - Premium domains, for not so premium prices
No-IP - Dynamic DNS and Managed DNS Provider
Amazon Route 53 - Amazon Route 53 is a highly available and scalable DNS web service.
Duck DNS - Free dynamic DNS hosted on Amazon VPC
Brandpa - Domain names for startups
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!