JavaScript
const country_codes = {"ad": "Andorra","ae": "United Arab Emirates","af": "Afghanistan","ag": "Antigua and Barbuda","ai": "Anguilla","al": "Albania","am": "Armenia","ao": "Angola","aq": "Antarctica","ar": "Argentina","as": "American Samoa","at": "Austria","au": "Australia","aw": "Aruba","ax": "Åland Islands","az": "Azerbaijan","ba": "Bosnia and Herzegovina","bb": "Barbados","bd": "Bangladesh","be": "Belgium","bf": "Burkina Faso","bg": "Bulgaria","bh": "Bahrain","bi": "Burundi","bj": "Benin","bl": "Saint Barthélemy","bm": "Bermuda","bn": "Brunei Darussalam","bo": "Bolivia (Plurinational State of)","bq": "Bonaire, Sint Eustatius and Saba","br": "Brazil","bs": "Bahamas","bt": "Bhutan","bv": "Bouvet Island","bw": "Botswana","by": "Belarus","bz": "Belize","ca": "Canada","cc": "Cocos (Keeling) Islands","cd": "Congo (Democratic Republic of the)","cf": "Central African Republic","cg": "Congo","ch": "Switzerland","ci": "Côte d'Ivoire","ck": "Cook Islands","cl": "Chile","cm": "Cameroon","cn": "China","co": "Colombia","cr": "Costa Rica","cu": "Cuba","cv": "Cabo Verde","cw": "Curaçao","cx": "Christmas Island","cy": "Cyprus","cz": "Czechia","de": "Germany","dj": "Djibouti","dk": "Denmark","dm": "Dominica","do": "Dominican Republic","dz": "Algeria","ec": "Ecuador","ee": "Estonia","eg": "Egypt","eh": "Western Sahara","er": "Eritrea","es": "Spain","et": "Ethiopia","fi": "Finland","fj": "Fiji","fk": "Falkland Islands (Malvinas)","fm": "Micronesia (Federated States of)","fo": "Faroe Islands","fr": "France","ga": "Gabon","gb": "United Kingdom of Great Britain and Northern Ireland","gd": "Grenada","ge": "Georgia","gf": "French Guiana","gg": "Guernsey","gh": "Ghana","gi": "Gibraltar","gl": "Greenland","gm": "Gambia","gn": "Guinea","gp": "Guadeloupe","gq": "Equatorial Guinea","gr": "Greece","gs": "South Georgia and the South Sandwich Islands","gt": "Guatemala","gu": "Guam","gw": "Guinea-Bissau","gy": "Guyana","hk": "Hong Kong","hm": "Heard Island and McDonald Islands","hn":...