XK (user assigned code)
ISO 3166-1 alpha-2 equivalent user-assigned code element used to represent Kosovo. / From Wikipedia, the free encyclopedia
XK is an ISO 3166-1 alpha-2 equivalent user-assigned code element used to represent Kosovo. Similarly, XKX is an ISO 3166-1 alpha-3 equivalent user-assigned code element for Kosovo in the European Union,[1] and XKK is used in the Unicode standard.[2]