nip.io allows you to do that by mapping any IP Address to a hostname using the following formats:
Without a name:
10.0.0.1.nip.io
maps to10.0.0.1
192-168-1-250.nip.io
maps to192.168.1.250
10.0.0.1.nip.io
maps to 10.0.0.1
192-168-1-250.nip.io
maps to 192.168.1.250