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
GT& GTA GTB GTC GTD GTE GTF GTG GTH GTI GTJ GTK GTL GTM GTN GTO GTP GTQ GTR GTS GTT GTU GTV GTW GTX GTY GTZ
GTRA GTRE GTRI GTRJ GTRK GTRM GTRO GTRP GTRR GTRS GTRT GTRU GTRW GTRX GTRY
1 GTRA Golden Triangle R.R. added 7/1982; 1/1994-7/2005   NAKINA
2 GTRA Golden Triangle R.R. added 7/82; 1/94-7/2000   NRHS
3 GTRA GOLDEN TRIANGLE RAILROAD     PWRC
4 GTRA Golden Triangle Railroad     RSRV
5 GTRA GOLDEN TRIANGLE RAILROAD     SCAC4
6 GTRA Golden Triangle R.R.   USA TRAFFIC