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
DHA DHB DHC DHD DHE DHF DHG DHH DHI DHK DHL DHM DHN DHO DHP DHQ DHR DHS DHT DHU DHV DHW DHX DHZ
DHDB DHDC DHdJ DHDO DHDS DHDU
1 DHDO New York, Susquehanna and Western Ry. Corp. eliminated 7/1991   NAKINA
2 DHDO New York, Susquehanna and Western Ry. Corp. eliminated 7/91   NRHS
3 DHDO (NYSW) RETIRED 05-31-91 DMC (345){NEW YORK, SUSQUEHANNA & WESTERN RWY.]     PWRC