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
O& O2 O3 O4 O5 O6 O7 O8 O9 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OO OP OQ OR OS OT OU OV OW OX OY OZ
OPA OPB OPC OPD OPE OPF OPG OPH OPI OPJ OPK OPL OPM OPN OPO OPP OPR OPS OPT OPU OPV OPW OPX
OPSA OPSB OPSC OPSE OPSI OPSL OPSM OPSP OPSQ OPSS OPSU OPSX
1 OPSX Public Service Co. of Oklahoma added 1/1979; 1/1980-7/2005   NAKINA
2 OPSX Public Service Co. of Oklahoma added 1/79; 1/80-7/2000   NRHS
3 OPSX PUBLIC SERVICE COMPANY OF OKLAHOMA     PWRC
4 OPSX Public Service of Oklahoma     RSRV
5 OPSX PUBLIC SERVICE COMPANY OF OKLAHOMA     SCAC4