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
M& M- M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF MG MH MI MJ MK ML MM MN MO MP MQ MR MS MT MU MV MW MX MY MZ
MD& MDA MDB MDC MDD MDE MDF MDG MDH MDI MDJ MDK MDL MDM MDN MDO MDP MDQ MDR MDS MDT MDU MDV MDW MDX MDY MDZ
MDDA MDDB MDDE MDDH MDDK MDDL MDDM MDDN MDDO MDDR MDDX MDDY
1 MDDE Maryland and Delaware R.R. Co. added 1/1978; 1/1980; eliminated 10/1987; 1/1994-7/2005; eliminated 10/2009   NAKINA
2 MDDE Maryland and Delaware R.R. Co. added 1/78; 1/80; eliminated 10/87; 1/94-7/2000   NRHS
3 MDDE MARYLAND & DELAWARE RAILROAD CO.     PWRC
4 MDDE Maryland and Delaware Railroad     RSRV