| 1 | DOX | Derby Refining Co. | added 4/1955; 10/1957; eliminated 1/1960 | | NAKINA |
| 2 | DOX | Derby Oil Co. | 1/1950-7/1954; eliminated 4/1955 | | NAKINA |
| 3 | DOX | General American Transportation Corp. | 4/1938 | | NAKINA |
| 4 | DOX | The Derby Oil Co. | 8/1920-7/1937 | | NAKINA |
| 5 | DOX | Derby Oil Co. (General American Transportation Corp.) | Apr-38 | | NRHS |
| 6 | DOX | Derby Oil Co. | 1/52; eliminated 4/55 | | NRHS |
| 7 | DOX | Derby Refining Co. | added 4/55; 10/57; eliminated 1/60 | | NRHS |
| 8 | DOX | DERBY REFINING CO. (GENERAL AMERICAN TRANSPORTATION CORP.) [DERBY OIL CO.] | | | PWRC |
| 9 | DOXE | DIXIE OHIO XPRESS | | | SCAC4 |
| 10 | DOXM | DOX | | | SCAC4 |
| 11 | DOXT | DOMINO TRANSPORT INC | | | SCAC4 |
| 12 | DOXY | DIXIE OHIO EXPRESS INC | | | PWRC |
