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
U0 U1 U2 U3 U4 U5 U6 U7 U8 U9 UA UB UC UD UE UF UG UH UI UJ UK UL UM UN UO UP UQ UR US UT UU UV UW UX UY UZ
USA USB USC USD USE USF USG USH USI USJ USK USL USM USN USO USP USQ USR USS UST USU USV USW USX USY
USLC USLD USLE USLF USLG USLI USLJ USLN USLO USLP USLR USLT USLU USLX USLY USLZ
1 USLF St. Louis-San Francisco Ry. Co. 4/1970-1/1980; eliminated 1/1981   NAKINA
2 USLF Burlington Northern Inc. added 1/1981; eliminated 7/1981   NAKINA
3 USLF Burlington Northern R.R. Co. added 7/1981; eliminated 7/1985   NAKINA
4 USLF St. Louis-San Francisco Ry. Co. 4/70-1/80; eliminated 1/81   NRHS
5 USLF Burlington Northern Inc. added 1/81; eliminated 7/81   NRHS
6 USLF Burlington Northern R.R. Co. added 7/81   NRHS
7 USLF BURLINGTON NORTHERN RAILROAD [ST. LOUIS-SAN FRANCISCO RWY. CO.]     PWRC
8 USLF St. Louis-San Francisco Railway (BNSF Railway)     RSRV