🇬🇺Guam (officially: Guam) is filed in ISO 3166-1 under alpha-2 code GU, alpha-3 code GUM and numeric code 316. Its international dialing code is +1671 and its country-code top-level domain is .gu. The capital is Hagåtña. Region: Oceania.
Currency: USD (US Dollar).
The two-letter code appears in domains, locales (like en-GU), shipping and licence plates; the three-letter code in passports, finance and sport; the numeric code where Latin script is unavailable.