Foundation Callsign Availability Tool – This lets you check to see if an M7, M6 or M3 callsign has already been issued.
Callsign Finder
Use x or ? as a wildcard. Examples:
M7xxx, M6SX?, M7?A?.
Available callsigns: loading…
This tool checks to see if a Foundation callsign has been taken, or is available – according to data released by Ofcom. Database date: 13-Nov-25
This checker is still a work-in-progress, so don’t rely on data on this page. Please contact us if the service appears broken, or you discover a problem.
The data used for this tool comes from Ofcom, and has been released under the Ofcom Open Data policy in accordance with the Open Government Licence 3.0.
