Which region does the license plate 'Nan B' belong to?

[AlexandraDella]

Currently, there is no license plate with the code 'Nan B'. License plate codes consist of 2 characters, combining a Chinese character and an English letter. The Chinese character represents the abbreviation of a province, autonomous region, or municipality, while the English letter denotes the code of the vehicle management office. The plate number consists of 6 characters, which can be Arabic numerals or a combination of Arabic numerals and English letters. License plates serve as a unique identifier and information registration for vehicles, primarily allowing identification of the vehicle's region of registration and enabling access to the owner's details and registration information through the plate number. Vehicle license plates can be categorized into: new energy vehicle plates, large vehicle plates, trailer plates, small vehicle plates, driving school vehicle plates, etc.