Codes used in several countries
XI on a licence plate
XI is an area code in 3 countries. The plate's style and country code tell them apart.
Greece
XI-1234Code details →Chios
Ukraine
XI 1234 BCCode details →Poltava Oblast
United Kingdom
XI51 ABCCode details →Antrim (Northern Ireland), Down (Northern Ireland)
named after Belfast
Greece
Ukraine
United Kingdom