1. ISO 3166-1
alpha-2 code for the Socialist Republic of Vietnam. This is the code used in international
transactions to and from Vietnamese bank accounts.
2. ISO 3166-2 geocode for Vietnam. This is used as an international standard for shipping to Vietnam. Each province has its own code with the prefix "VN." For example, the code for Hanoi is ISO 3166-2:VN-64.