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 4I Knighthawk Air Express Ltd. ICAO: KNX, Callsign: Knight Flight, IATA Prefix: 699, Founded in December 1993. Ceased operations in 2005. CDN AVCODES
2 4I IHY Izmir Havayollari A.S. t/a iZair ICAO: IZM, IATA Prefix: 597, Founded in April 2005. Merged into Pegasus Airlines by end 2018. TR AVCODES