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
G& G0 G1 G2 G3 G4 G5 G6 G7 G8 G9 GA GB GC GD GE GF GG GH GI GJ GK GL GM GN GO GP GQ GR GS GT GU GV GW GX GY GZ
GRA GRB GRC GRD GRE GRF GRG GRH GRI GRJ GRK GRL GRM GRN GRO GRP GRQ GRR GRS GRT GRU GRV GRW GRX GRY GRZ
GRDB GRDD GRDE GRDI GRDK GRDL GRDN GRDO GRDQ GRDS GRDT GRDU GRDW GRDX
1 GRDX Grand River Dam Authority added 10/1978; eliminated 4/1979; added 1/1981; 1/1994-7/2000; eliminated 7/2001; 7/2005 (not listed)   NAKINA
2 GRDX Grand River Dam Authority added 10/78; eliminated 4/79; added 1/81; 1/94-7/2000; eliminated 7/2001   NRHS
3 GRDX GRAND RIVER DAM AUTHORITY     PWRC
4 GRDX Grand River Dam Authority     RSRV
5 GRDX GRAND RIVER DAM AUTHORITY     SCAC4