HAM Radio ITU Callsign Prefix Lookup

Windows users:

Download and extract the zip file: HAM-Radio-ITU-Callsign-Prefix-Lookup-windows.zip

Run command shell cmd.bat

and type: callsign-lookup.bat hg5oap

Linux users:

# ./callsign-lookup.sh hg5oap
Prefix: HG Country: Hungary

Sources:

ITU prefix list: https://en.wikipedia.org/wiki/ITU_prefix