Callsign location by Country.

[Iain Cooke]

Has anyone ever compiled a list of callsigns by Country before? Particularly interested in just the U.K. countries.

[Tom M0LTE]

The canonical source for this information in the amateur radio world is 

https://www.country-files.com/ - commonly parsing CTY.DAT.

It’s a bit archaic but regularly updated. Quite an effort.

On Tue, 2 Sep 2025 at 22:06, Iain Cooke <iainm...@gmail.com> wrote:

Has anyone ever compiled a list of callsigns by Country before? Particularly interested in just the U.K. countries.

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[Iain Cooke]

thaat's great!, thank you!

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[Iain Cooke]

cannot find any by country at all, what am I missing?

[Philip Gladstone]

If you want UK licensees, then I'd file a freedom of information request with Ofcom stating what you want. 

Philip

Philip Gladstone

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[Tom M0LTE]

Iain-

You need to write a parser for the country file data into your environment of choice

Then you need to write logic which finds the ‘deepest’ match for the callsign you have, so you take into account all the possible exceptions first

Then you need to ensure you regularly update the country file data in your application

It isn’t a straight callsign list mapped to country- such a thing does not exist for the UK and never will, since our prefixes are variable by current location (and also are optional, apart from 2# calls). And there is no public list of active calls. So a rules based approach is the only practical way.

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[Iain Cooke]

thanks!