This repository contains a JSON reference for amateur radio DX Century Club (DXCC) entities as maintained by the Amateur Radio Relay League (ARRL). This is intended for consumption by other amateur radio software.

The reference data started from the ARRL Country Lists & Prefixes page, specifically the February 2020 text listing. That document was imported into a Google Spreadsheet for formatting and cleansing. I added country codes, unicode flag glyphs and callsign prefix regular expressions (regexes), and exported the spreadsheet as the CSV contained in this repository. Finally, the included python script generates the JSON file.

One simple way to generate a smaller file with just what you need is to use the jq utility.

$ < dxcc.json jq -c '{dxcc: [ .dxcc[] | select( .deleted==false ) | 
    {id: .entityCode, name: .name, prefixRegex: .prefixRegex, flag: .flag} ]}' > dxcc-filter.json

{
  "dxcc": [
    {
      "id": 1,
      "name": "Canada",
      "prefixRegex": "^V[A-GOY][A-Z0-9/]*$",
      "flag": "🇨🇦"
    },
    {
      "id": 3,
      "name": "Afghanistan",
      "prefixRegex": "^(YA|T6)[A-Z0-9/]*$",
      "flag": "🇦🇫"
    },
...
    {
      "id": 522,
      "name": "Kosovo",
      "prefixRegex": "^Z6[A-Z0-9/]*$",
      "flag": "🇽🇰"
    }
  ]
}