關於「Vietnam subdivision code」標籤，搜尋引擎有相關的訊息討論：

List of ISO 3166 country codes - Wikipediaen.wikipedia.org › wiki › List_of_ISO_3166_country_codesID Issuer: Country and Subdivision Codes - Berbixdocs.berbix.com › docs › country-codesISO 3166-1 alpha-2 - Wikipediaen.wikipedia.org › wiki › ISO_3166-1_alpha-2awesome-validator/d