Dead simple wildcard DNS for any IP Address

Stop editing your etc/hosts file with custom hostname and IP address mappings.

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 to 10.0.0.1
• 192-168-1-250.nip.io maps to 192.168.1.250
• 0a000803.nip.io maps to 10.0.8.3

With a name:

• app.10.8.0.1.nip.io maps to 10.8.0.1
• app-116-203-255-68.nip.io maps to 116.203.255.68
• app-c0a801fc.nip.io maps to 192.168.1.252
• customer1.app.10.0.0.1.nip.io maps to 10.0.0.1
• customer2-app-127-0-0-1.nip.io maps to 127.0.0.1
• customer3-app-7f000101.nip.io maps to 127.0.1.1

nip.io maps <anything>[.-]<IP Address>.nip.io in "dot", "dash" or "hexadecimal" notation to the corresponding <IP Address>:

• dot notation: magic.127.0.0.1.nip.io
• dash notation: magic-127-0-0-1.nip.io
• hexadecimal notation: magic-7f000001.nip.io

The "dash" and "hexadecimal" notation is especially useful when using services like LetsEncrypt as it's just a regular sub-domain of nip.io