NIP.IO

Dead simple wildcard DNS for any IP Address

NIP.IO allows you to map any IP Address in the following DNS wildcard entries:

10.0.0.1.nip.io maps to 10.0.0.1
app.10.0.0.1.nip.io maps to 10.0.0.1
customer1.app.10.0.0.1.nip.io maps to 10.0.0.1
customer2.app.10.0.0.1.nip.io maps to 10.0.0.1
otherapp.10.0.0.1.nip.io maps to 10.0.0.1

NIP.IO maps <anything>.<IP Address>.nip.io to the corresponding <IP Address>, even 127.0.0.1.nip.io maps to 127.0.0.1