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
SWYA SWYB SWYD SWYF SWYI SWYJ SWYK SWYL SWYM SWYO SWYQ SWYR SWYT SWYX SWYY
1 SWYX Stauffer Chemical Co. of Wyoming added 4/1981; eliminated 4/1990   NAKINA
2 SWYX Rhone-Poulenc of Wyoming Co. added 4/1990; 1/1994; eliminated 7/1996   NAKINA
3 SWYX OCI Chemical Wyoming Co. added 7/1996; 7/2000-7/2005; eliminated 1/2010   NAKINA
4 SWYX Stauffer Chemical Co. of Wyoming added 4/81; eliminated 4/90   NRHS
5 SWYX Rhone-Poulenc of Wyoming Co. added 4/90; 1/94; eliminated 7/96   NRHS
6 SWYX OCI Chemical Wyoming Co. added 7/96; 7/2000   NRHS
7 SWYX OCI CHEMICAL WYOMING CO. [RHONE-POULENC OF WYOMING CO.; STAUFFER CHEMICAL CO.]     PWRC
8 SWYX Stauffer Chemical of Wyoming     RSRV