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
I& I2 I3 I4 I5 I6 I7 I8 I9 IA IB IC ID IE IF IG IH II IJ IK IL IM IN IO IP IQ IR IS IT IU IV IW IX IY IZ
IIA IIC IID IIE IIG III IIL IIM IIN IIP IIR IIS IIT IIZ
IIRC IIRX IIRZ
1 IIRC Indiana Interstate Ry. Co., Inc. added 4/1978; 1/1980; added 7/1980; eliminated 1/1983   NAKINA
2 IIRC Indiana Interstate Ry. Co., Inc. added 4/78; 1/80; added 7/80; eliminated 1/83   NRHS
3 IIRC INDIANA INTERSTATE RAILWAY CO.     PWRC
4 IIRC Indiana Interstate Railway     RSRV