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
S& S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ
SP& SPA SPB SPC SPD SPE SPF SPG SPH SPI SPJ SPK SPL SPM SPN SPO SPP SPQ SPR SPS SPT SPU SPV SPW SPX SPY SPZ
SPMA SPMD SPME SPMH SPMI SPMJ SPMO SPMQ SPMT SPMV SPMW SPMX SPMY
1 SPMW UNION PACIFIC RAILROAD [SOUTHERN PACIFIC RAILROAD] (FOR MAINTENANCE OF WAY EQUIP.]     PWRC
2 SPMW Southern Pacific Railroad (Union Pacific Railroad)     RSRV