Ichnaea is a service to provide geolocation coordinates from other sources of data (cell or WiFi networks, GeoIP, etc.).

Mozilla hosts an instance of this service, called the Mozilla Location Service or MLS.

You can interact with the service in two ways:

  • If you know where you are, submit information about the radio environment to the service
  • or locate yourself, based on the radio environment around you.

About the name

In Greek mythology, Ichnaea (Iknaia) means “the tracker”.


All source code is available on github under ichnaea.

The developers of ichnaea can frequently be found on the Mozilla IRC network in the #geo channel.

Development CI Status

Travis CI build report


The ichnaea source code is offered under the Apache License 2.0.