Might be close: http://lvh.me http://lvh.me is a free service that resolves itself along with all subdomains to localhost. Edit: http://nip.io/ http://nip.io/

Might be close: http://lvh.me http://lvh.me is a free service that resolves itself along with all subdomains to localhost. Edit: http://nip.io/ http://nip.io/ looks like it does exactly what you asked.