Callsign Checker

Essex Ham's Callsign Lookup Tool: Check if a UK callsign is valid, and check QRZ data, waiting eQSL cards, location and last cluster spots.

Enter a UK Callsign: Check databases:

Callsign Checker v1.11 © Essex Ham (Reload)

This tool checks to see if the callsign entered is a valid UK callsign. It is still a work-in-progress, so don't rely on data on this page. Please let us know if you find a callsign that's wrongly identified.

Some of 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.