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
DT& DTA DTB DTC DTD DTE DTF DTG DTH DTI DTJ DTK DTL DTM DTN DTO DTP DTQ DTR DTS DTT DTU DTV DTW DTX DTY DTZ
DT&I
1 DT&I Detroit, Toledo & Ironton R.R. (Co.) 8/1920-10/1966   NAKINA
2 DT&I Detroit, Toledo & Ironton R.R. Co. 23-Jul   NRHS
3 DT&I Detroit, Toledo & Ironton R.R. 4/38-10/66   NRHS
4 DT&I CANADIAN NATIONAL RAILWAY [GRAND TRUNK WESTERN RR; DETROIT, TOLEDO & IRONTON]     PWRC