It defines three sets of country codes: ISO 3166-1 alpha-2 – two-letter country codes which are the most widely used of the three, [citation needed] and used most prominently for the Internet's country code top-level domains (with a few exceptions).
Vietnam has various country codes assigned to it. The ISO 3166-1 numeric country code for Vietnam is 704. The ISO 3166-1-Alpha-2 or 2 letter country code for Vietnam is VN, while the ISO 3166-1-Alpha-3 or 3 letter country code for Vietnam is VNM. 1. About Vietnam country code A country code, also known as an international subscriber dialing (ISD) code, is a telephone number prefix utilized in international direct dialing (IDD) to route calls to a country different from the caller's.4 days ago · 011 - international prefix; dial first when calling abroad from the US or Canada. 84 - Country Code for Vietnam. Phone Number ( remove initial 0) - 9 digits for mobiles and 10 digits for landlines. example call from the United States or from Canada to a landline in Hanoi: 011 84 24 ???? ????The two-letter country abbreviation for Vietnam is VN, the three-letter code is VNM International Telephone Code of Vietnam 84 The Vietnam telephone country code is the number 84.