Codes used in several countries
DZ on a licence plate
DZ is an area code in 3 countries. The plate's style and country code tell them apart.
Germany
DZ-AB 1234Code details →Nordsachsen (Saxony)
named after Delitzsch
Norway
DZ 12345Code details →Oslo
United Kingdom
DZ51 ABCCode details →Antrim (Northern Ireland)