Real world company prefixes

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M n O P Q R S T U V W X Y Z Ø
4A 4B 4C 4D 4E 4F 4G 4H 4I 4J 4K 4L 4M 4N 4O 4P 4Q 4R 4S 4T 4U 4V 4W 4X 4Y 4Z
1 4X F'Airlines B.V. ICAO: FLS, Callsign: Fairline, Designator 4X recalled by IATA NL AVCODES
2 4X Atlantic Express Airlines ICAO: JLM, Callsign: Atlantic Express, Commenced operation on 16 December 2004. Ceased operations WAG AVCODES
3 4X Mercury Air Cargo, Inc. d/b/a Air Mercury ICAO: MEC, Callsign: Mercair, IATA Prefix: 805, IATA designator changed from BX* USA AVCODES