nip.io

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

About this service

nip.io is powered by PowerDNS with a simple, custom PipeBackend written in Python: backend.py

It's open source, licensed under Apache 2.0: https://github.com/exentriquesolutions/nip.io — pull requests are welcome.

This is a free service provided by Exentrique Solutions (the same people who run XP-Dev.com which offer Git, Mercurial and Subversion hosting).

Feedback is appreciated, just raise an issue in GitHub .

Troubleshooting

DNS Rebinding Protection

Some DNS resolvers, forwarders and routers have DNS rebinding protection which may result in failure to resolve local and private IP addresses. This service won't work in those situations.

Related Services

  • localtls: A DNS server in Python3 to provide TLS to webservices on local addresses. It resolves addresses such as '192-168-0-1.yourdomain.net' to 192.168.0.1 and has a valid TLS certificate for them.
  • xip.io: Alternative to this service.
  • sslip.io: Alternative to this service, supports IPv6 and custom domains.