| 1 | MBX | Montrose Beef Co. | 1/1946-10/1957; eliminated 4/1961 | | NAKINA |
| 2 | MBX | Mechling Bros. Chemicals, a Division of General Chemical Co. | 7/1937-4/1938 | | NAKINA |
| 3 | MBX | Mechling Bros. Chemical Co. | 7/1935 | | NAKINA |
| 4 | MBX | Montrose Beef Co. | 1/52-10/57; eliminated 4/61 | | NRHS |
| 5 | MBX | Mechling Bros. Chemicals, a Division of General Chemical Co. | Apr-38 | | NRHS |
| 6 | MBX | *MECHLING BROS. CHEMICALS, DIV. GENERAL CHEMICAL CO. | | | PWRC |
| 7 | MBX | *MONTROSE BEEF CO. | | | PWRC |
| 8 | MBXB | MBX LOGISTICS CANADA CO ( | | | SCAC4 |
| 9 | MBXD | MBX LOGISTIC INC | | | SCAC4 |
| 10 | MBXG | MBX LOGISTICS CANADA CO | | | SCAC4 |
| 11 | MBXJ | MAL-BROS TRANSPORTATION LLC | | | SCAC4 |
| 12 | MBXL | MBT COURIER LLC | | | SCAC4 |
| 13 | MBXM | MB TRANSPORTATION LLC | | | SCAC4 |
| 14 | MBXN | MBS TRANSPORTATION | | | SCAC4 |
| 15 | MBXO | MBX LOGISTICS CANADA CO | | | SCAC4 |
| 16 | MBXQ | MOBILE TRANSPORT | | | SCAC4 |
| 17 | MBXS | MBX LOGISTICS LLC | | | SCAC4 |
| 18 | MBXU | MOBILBOX CONTAINER TRADING LTD | | H | BIC |
| 19 | MBXU | MOBILEBOX CONTAINER TRADING LTD | | | SCAC4 |
