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
D D& D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DY DZ
DUA DUB DUC DUD DUE DUF DUG DUH DUI DUJ DUK DUL DUM DUN DUO DUP DUQ DUR DUS DUT DUV DUX
DUOC DUOP
1 DUO Duo Airways Limited IATA: VB, Callsign: Fly Duo, IATA Prefix: 702, Ceased operation 01 May 2004. ICAO code changed from DAW and MSK. ICAO Callsign changed to from Bluestar. Name changed from Maersk Air Ltd. GB AVCODES
2 DUO Duo Airways     ICAO1
3 DUO DUOmobile GmbH   DE VKM
4 DUOC DUNMORE OIL COMPANY INC     SCAC4
5 DUOP DUO TRANSPORT     SCAC4