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 4O Ocean Airlines ICAO: KMO, COM AVCODES
2 4O ABC Aerolineas, S.A. de C.V. ICAO: AIJ, Callsign: ABC Aerolineas, IATA Prefix: 837, Ceased operations on 11 December 2020. Designator 4O* reinstated by IATA MEX AVCODES
3 4O Orbest Airlines, S.L. ICAO: OBS, Callsign: Orbest, IATA desigantor changed to 6O. Subsidary of Iberworld, Spain. P AVCODES