| 1 | DTI | Grand Trunk Western R.R. Inc. | added 1/1984; 1/1994-7/2005 | | NAKINA |
| 2 | DTI | Detroit, Toledo & Ironton R.R. Co. | 4/1961-10/1966 & 1/1975-1/1980; eliminated 1/1984 | | NAKINA |
| 3 | DTI | Detroit, Toledo & Ironton R.R. Co. | 4/61-10/66 & 1/75-1/80 | | NRHS |
| 4 | DTI | Grand Trunk Western R.R. Inc. | 1/94-7/2000 | | NRHS |
| 5 | DTI | CANADIAN NATIONAL RAILWAY [GRAND TRUNK WESTERN RR; DETROIT, TOLEDO & IRONTON] | | | PWRC |
| 6 | DTI | Detroit, Toledo and Ironton Railroad (Canadian National Railway) | | | RSRV |
| 7 | DTI | Detroit, Toledo & Ironton R.R. Co. | | USA | TRAFFIC |
| 8 | DTIB | DAVIDSON TRUCKING INC | | | SCAC4 |
| 9 | DTIC | D T I INC | | | SCAC4 |
| 10 | DTID | D T I DIVERSIFIED TRANSPORTATION IN | | | SCAC4 |
| 11 | DTIH | DELUX TRUCKING INC | | | SCAC4 |
| 12 | DTII | DEAN TRANSPORTATION, INC. | | | SCAC4 |
| 13 | DTIK | DEVALL TRUCKING INC | | | SCAC4 |
| 14 | DTIL | DTI LOGISTICS INC | | | SCAC4 |
| 15 | DTIM | DIMARE TAMPA INC | | | SCAC4 |
| 16 | DTIN | D T INC | | | SCAC4 |
| 17 | DTIO | DITCO, INC | | | SCAC1 |
| 18 | DTIO | DTI INTERNATIONAL | | | SCAC4 |
| 19 | DTIP | DIRECT TRANSPORTATION INC | | | SCAC4 |
| 20 | DTIQ | DLD TRANSPORTATION INC | | | SCAC4 |
| 21 | DTIR | DTI | | | SCAC4 |
| 22 | DTIT | DILLON TRANSPORT INC | | | SCAC4 |
| 23 | DTIZ | *CANADIAN NATIONAL RAILWAY [GRAND TRUNK WESTERN RR] | | | PWRC |
| 24 | DTIZ | *DETERMAN INDUSTRIES | | | PWRC |
| 25 | DTIZ | Detroit, Toledo and Ironton Railroad (Canadian National Railway) | | | RSRV |
| 26 | DTIZ | GRAND TRUNK WESTERN RAILROAD COMPAN | | | SCAC4 |
