09-12-2015, 12:20 PM
http://www.afraid.org has 1000s of domains available to use in dynamic or normal dns. Only 3rd level but with some very uncommon and hard to find extensions. So maybe its good if you need crazy reverse dns for irc or just want personal/dynamic dns instead of remember ip. The service is also very old and stable.
List of available domains: http://freedns.afraid.org/domain/registry/
List of available domains: http://freedns.afraid.org/domain/registry/