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This website currently contains a database of all UK and US amateur radio call signs, including any reserved call signs, i.e. are not allowed to be used by anyone. For the UK data, where the licensee has consented to make their details public the entry also contains the licensee's personal data they have shared with OFCOM, otherwise only the fact that the call sign exists and the type of licence will be displayed. The UK database is updated quarterly from data supplied by OFCOM. The US database is updated daily from the FCC's online ULS site.

The UK dataset currently consists of 158,338 call signs.
The US dataset currently consists of 1,695,048 call signs.

We plan on introducing a RoTW (Rest of The World) database, so if you hold a call sign from a country other than the UK & the US you may register your details with us so you are included in the database. This will allow others to find you.

In order to use the site you need to register for an account. Once you have registered you will be given "Basic" access, this is free of charge and will allow you to search for call signs to determine if they exist in the database. If you want to view the details of the call sign holder you will need to request "Verified" access. If you are a licensed radio amateur this is free of charge, you just need to provide a copy your amateur radio license. If you are not a licensed radio amateur please contact us to explain why you would like access.

We have also added a set of map functions that should be useful to radio amateurs and made them publicly available from the "Maps" menu above.