Codes used in several countries
ZT on a licence plate
ZT is an area code in 4 countries. The plate's style and country code tell them apart.
Austria
ZT 123ABCode details →Zwettl (Lower Austria)
Greece
ZT-1234Code details →West Attica
Montenegro
ZT AB 123Code details →Zeta
named after Zeta
Norway
ZT 12345Code details →Finnmark
named after Alta