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
MSA MSB MSC MSD MSE MSF MSG MSH MSI MSJ MSK MSL MSM MSN MSO MSP MSQ MSR MSS MST MSU MSV MSW MSX MSY MSZ
MSDB MSDC MSDF MSDG MSDM MSDQ MSDR MSDT MSDU MSDV MSDW MSDY
1 MSDR Knoxville & Holston River R.R. Co., Inc. added 1/2003; 7/2005   NAKINA
2 MSDR Mississippi Delta R.R. added 4/1986; 1/1994-7/2000; eliminated 1/2003   NAKINA
3 MSDR Mississippi Delta R.R. added 4/86; 1/94-7/2000   NRHS
4 MSDR KNOXVILLE & HOLSTON RIVER RAILROAD CO. [MISSISSIPPI DELTA RAILROAD]     PWRC
5 MSDR Mississippi Delta Railroad     RSRV