Codes used in several countries
RN on a licence plate
RN is an area code in 5 countries. The plate's style and country code tell them apart.
Germany
RN-AB 1234Code details →Havelland (Brandenburg)
named after Rathenow
Ireland
241-RN-12345Code details →Roscommon
Italy
RN A58322Code details →Rimini (Emilia-Romagna)
Norway
RN 12345Code details →Rogaland
named after Stavanger
United Kingdom
RN51 ABCCode details →Reading