| 1 | OPR | Operaciones Aviacore, S.A. de C.V. | Callsign: Aviacore, | MEX | AVCODES |
| 2 | OPR | Oregon Pacific R.R. Co. | 7/2000-7/2005 | | NAKINA |
| 3 | OPR | Oregon Pacific R.R. Co. | Jul-00 | | NRHS |
| 4 | OPR | OREGON PACIFIC RAILROAD | | | PWRC |
| 5 | OPR | Oregon Pacific Railroad | | | RSRV |
| 6 | OPR | OREGON PACIFIC RAILROAD CO | | | SCAC4 |
| 7 | OPRC | OPERATIONAL COURIER SERVICE INC | | | SCAC3 |
| 8 | OPRC | O P D I LOGISTICS CORP | | | SCAC4 |
| 9 | OPRD | OPENROAD TRANSPORTATION INC | | | SCAC4 |
| 10 | OPRE | OPEN ROAD EXPRESS INC | | | SCAC3 |
| 11 | OPRU | OPERATOR LLC | | RUS | BIC |
| 12 | OPRU | OPERATOR C LTD | | | SCAC4 |
