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
GTWE GTWF GTWG GTWI GTWJ GTWL GTWP GTWQ GTWS GTWV GTWW
1 GTWQ Grand Trunk Western R.R. Inc. added 7/1995; 7/2005   NAKINA
2 GTWQ Grand Trunk Western R.R. Inc. added 7/95; 7/2000   NRHS
3 GTWQ CANADIAN NATIONAL RAILWAY [GRAND TRUNK WESTERN RAILROAD]     PWRC
4 GTWQ Grand Trunk Western (Canadian National Railway)     RSRV
5 GTWQ G T W     SCAC4