🇲🇴Macau (officially: Macao Special Administrative Region of the People's Republic of China) is filed in ISO 3166-1 under alpha-2 code MO, alpha-3 code MAC and numeric code 446. Its international dialing code is +853 and its country-code top-level domain is .mo. Region: Asia.
The two-letter code appears in domains, locales (like en-MO), shipping and licence plates; the three-letter code in passports, finance and sport; the numeric code where Latin script is unavailable.