| 1 | DIM | Denver & Intermountain R.R. | 4/1938-7/1954 | | NAKINA |
| 2 | DIM | Denver & Intermountain R.R. | 4/38-1/52 | | NRHS |
| 3 | DIM | DENVER & INTERMOUNTAIN RAILROAD | | | PWRC |
| 4 | DIMC | DIRECT INTERMODAL LLC | | | SCAC4 |
| 5 | DIMD | DIAMOND TRANSFER | | | SCAC4 |
| 6 | DIMF | DENNISON INTERNATIONAL MOTORSPORTS | | | SCAC4 |
| 7 | DIMJ | DIME INC | | | SCAC4 |
| 8 | DIMM | DIMMEX DE BAJA CALIFORNIA S DE RL D | | | SCAC4 |
| 9 | DIMN | DIAMOND TRANSPORTATION SERVICES INC | | | SCAC4 |
| 10 | DIMR | DIMA TRUCKING LLC | | | SCAC4 |
| 11 | DIMT | DIAMOND TRUCKING | | | SCAC4 |
| 12 | DIMW | DIVERSIFIED INVESTMENTS INC | | | SCAC4 |
| 13 | DIMY | DIMENSION TRANSPORTATION SYSTEM INC | | | SCAC4 |
| 14 | DIMZ | DIM ASSOCIATES RAILROAD | | | PWRC |
