International vehicle registration code system is used for vehicles belonging to the diplomats of foreign countries with license plate from the host country. That system is host country-specific and varies largely from country to country. For example TR on a diplomatic car in the USA indicates Italian, not Turkish. Such markings in Norway are indicated with numbers only, again different from international standards (e.g. 90 means Slovakian. International vehicle registration code The country in which a motor vehicle's vehicle registration plate was issued may be indicated by an international licence plate country code, formerly known as an International Registration Letter or International Circulation Mark.
Vehicle registration plates of Azerbaijan (which in turn adopted a reversed version of the former French license plate system), in Azeri plates the first two digits of the license plate represent the department, followed by a progressive 2-letter and 3-number system (progression starting with AA-001 and ending with ZZ-999). Below is a table of digits and relevant departments (italic means this department is controlled (or mostly-controlled) by Nagorno-Karabakh Republic, bold means this department is a part of Naxçıvan AR): Vehicle registration plates of Azerbaijan Vehicle registration plates of Azerbaijan are usually composed of two numbers (identifying the vehicle registration department), a hyphen, two letters, a