Locale+ISD.swift

extension Locale {
    /// The calling code or "country dial in code" of the locale.
    /// See https://en.wikipedia.org/wiki/List_of_country_calling_codes#Alphabetical_listing_by_country_or_region
    var countryCallingCode: String? {
        return isdCode
    }
    
    /// The international subscriber dialling (ISD) code of the locale.
    var isdCode: String? {
        guard let regionCode = self.regionCode else { return nil }
        return Locale.isdCodeRegionCodeMap[regionCode]
    }
    
    /// Known IDS codes for locale region idenitifiers.
    static let isdCodeRegionCodeMap: [String: String] = [
        "AD" : "376",
        "AE" : "971",
        "AF" : "93",
        "AG" : "1",
        "AI" : "1",
        "AL" : "355",
        "AM" : "374",
        "AN" : "599",
        "AO" : "244",
        "AR" : "54",
        "AS" : "1",
        "AT" : "43",
        "AU" : "61",
        "AW" : "297",
        "AX" : "35818",
        "AZ" : "994",
        "BA" : "387",
        "BB" : "1",
        "BBQ" : "599",
        "BCW" : "599",
        "BD" : "880",
        "BE" : "32",
        "BF" : "226",
        "BG" : "359",
        "BH" : "973",
        "BI" : "257",
        "BJ" : "229",
        "BL" : "590",
        "BM" : "1",
        "BN" : "673",
        "BO" : "591",
        "BQ" : "599",
        "BR" : "55",
        "BS" : "1",
        "BT" : "975",
        "BW" : "267",
        "BY" : "375",
        "BZ" : "501",
        "CA" : "1",
        "CC" : "61",
        "CD" : "243",
        "CF" : "236",
        "CG" : "242",
        "CH" : "41",
        "CI" : "225",
        "CK" : "682",
        "CL" : "56",
        "CM" : "237",
        "CN" : "86",
        "CO" : "57",
        "CR" : "506",
        "CU" : "53",
        "CV" : "238",
        "CW" : "599",
        "CX" : "61",
        "CY" : "537",
        "CZ" : "420",
        "DE" : "49",
        "DG" : "246",
        "DJ" : "253",
        "DK" : "45",
        "DM" : "1",
        "DO" : "1",
        "DZ" : "213",
        "EC" : "593",
        "EE" : "372",
        "EG" : "20",
        "ER" : "291",
        "ES" : "34",
        "ET" : "251",
        "FI" : "358",
        "FJ" : "679",
        "FK" : "500",
        "FM" : "691",
        "FO" : "298",
        "FR" : "33",
        "GA" : "241",
        "GB" : "44",
        "GD" : "1",
        "GE" : "995",
        "GF" : "594",
        "GG" : "44",
        "GH" : "233",
        "GI" : "350",
        "GL" : "299",
        "GM" : "220",
        "GN" : "224",
        "GP" : "590",
        "GQ" : "240",
        "GR" : "30",
        "GS" : "500",
        "GT" : "502",
        "GU" : "1",
        "GW" : "245",
        "GY" : "595",
        "HK" : "852",
        "HN" : "504",
        "HR" : "385",
        "HT" : "509",
        "HU" : "36",
        "ID" : "62",
        "IE" : "353",
        "IL" : "972",
        "IM" : "44",
        "IN" : "91",
        "IO" : "246",
        "IQ" : "964",
        "IR" : "98",
        "IS" : "354",
        "IT" : "39",
        "JE" : "44",
        "JM" : "1",
        "JO" : "962",
        "JP" : "81",
        "KE" : "254",
        "KG" : "996",
        "KH" : "855",
        "KI" : "686",
        "KM" : "269",
        "KN" : "1",
        "KP" : "850",
        "KR" : "82",
        "KW" : "965",
        "KY" : "345",
        "KZ" : "77",
        "LA" : "856",
        "LB" : "961",
        "LC" : "1",
        "LI" : "423",
        "LK" : "94",
        "LR" : "231",
        "LS" : "266",
        "LT" : "370",
        "LU" : "352",
        "LV" : "371",
        "LY" : "218",
        "MA" : "212",
        "MC" : "377",
        "MD" : "373",
        "ME" : "382",
        "MF" : "590",
        "MG" : "261",
        "MH" : "692",
        "MK" : "389",
        "ML" : "223",
        "MM" : "95",
        "MN" : "976",
        "MO" : "853",
        "MP" : "1",
        "MQ" : "596",
        "MR" : "222",
        "MS" : "1",
        "MT" : "356",
        "MU" : "230",
        "MV" : "960",
        "MW" : "265",
        "MX" : "52",
        "MY" : "60",
        "MZ" : "258",
        "NA" : "264",
        "NC" : "687",
        "NE" : "227",
        "NF" : "672",
        "NG" : "234",
        "NI" : "505",
        "NL" : "31",
        "NO" : "47",
        "NP" : "977",
        "NR" : "674",
        "NU" : "683",
        "NZ" : "64",
        "OM" : "968",
        "PA" : "507",
        "PE" : "51",
        "PF" : "689",
        "PG" : "675",
        "PH" : "63",
        "PK" : "92",
        "PL" : "48",
        "PM" : "508",
        "PN" : "872",
        "PR" : "1",
        "PS" : "970",
        "PT" : "351",
        "PW" : "680",
        "PY" : "595",
        "QA" : "974",
        "RE" : "262",
        "RO" : "40",
        "RS" : "381",
        "RU" : "7",
        "RW" : "250",
        "SA" : "966",
        "SB" : "677",
        "SC" : "248",
        "SD" : "249",
        "SE" : "46",
        "SG" : "65",
        "SH" : "290",
        "SI" : "386",
        "SJ" : "47",
        "SK" : "421",
        "SL" : "232",
        "SM" : "378",
        "SN" : "221",
        "SO" : "252",
        "SR" : "597",
        "SS" : "211",
        "ST" : "239",
        "SV" : "503",
        "SX" : "1",
        "SY" : "963",
        "SZ" : "268",
        "TC" : "1",
        "TD" : "235",
        "TG" : "228",
        "TH" : "66",
        "TJ" : "992",
        "TK" : "690",
        "TL" : "670",
        "TM" : "993",
        "TN" : "216",
        "TO" : "676",
        "TR" : "90",
        "TT" : "1",
        "TV" : "688",
        "TW" : "886",
        "TZ" : "255",
        "UA" : "380",
        "UG" : "256",
        "US" : "1",
        "UY" : "598",
        "UZ" : "998",
        "VA" : "379",
        "VC" : "1",
        "VE" : "58",
        "VG" : "1",
        "VI" : "1",
        "VN" : "84",
        "VU" : "678",
        "WF" : "681",
        "WS" : "685",
        "XK" : "383",
        "YE" : "967",
        "YT" : "262",
        "ZA" : "27" ,
        "ZM" : "260",
        "ZW" : "263"
        ]
}