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
SWA SWB SWC SWD SWE SWF SWG SWH SWI SWJ SWK SWL SWM SWN SWO SWP SWQ SWR SWS SWT SWU SWV SWW SWX SWY SWZ
SWTA SWTB SWTC SWTD SWTF SWTG SWTH SWTJ SWTK SWTL SWTR SWTS SWTT SWTU SWTW SWTX SWTY SWTZ
1 SWTX Southwest Tank Line Co. 7/1930   NAKINA
2 SWTX General American Transportation System, Inc. (previously S.T.L.) added 11/1934; 7/1935-7/1965   NAKINA
3 SWTX Swift Tank Line (General American Transportation Corp.) 10/1966   NAKINA
4 SWTX General American Transportation Corp. 4/1970; eliminated 7/1974   NAKINA
5 SWTX Swift Tank Line (General American Transportation Corp.) Apr-38   NRHS
6 SWTX General American Transportation Corp. 1/52-7/65   NRHS
7 SWTX Swift Tank Line (General American Transportation Corp.) Oct-66   NRHS
8 SWTX General American Transportation Corp. 4/70; eliminated 7/74   NRHS
9 SWTX SWIFT TANK LINE (GATC){SOUTHWEST TANK LINE CO.]     PWRC