| 1 | OAK | Oakway | | USA | TRAFFIC |
| 2 | OAKC | OAKMONT CARRIER CORP | | | SCAC3 |
| 3 | OAKD | OAKLAND TRANSPORTATION SERVICE INC | | | SCAC3 |
| 4 | OAKD | OAKLAND TRANSPORTATION INC | | | SCAC4 |
| 5 | OAKE | OAKES, CHARLES H | | | SCAC3 |
| 6 | OAKF | OAKCREST FUEL INC | | | SCAC4 |
| 7 | OAKG | OAK GROVE TRUCKING COMPANY | | | SCAC3 |
| 8 | OAKH | OAK HARBOR FREIGHT LINES, INC | | | SCAC3 |
| 9 | OAKH | OAK HARBOR FREIGHT LINES INC | | | SCAC4 |
| 10 | OAKI | OAKLAND VAN & STORAGE INC | | | SCAC3 |
| 11 | OAKK | OAKLEY TANK LINES INC | | | SCAC4 |
| 12 | OAKL | OAKS LUMBER&HARDWARE, INC | | | SCAC3 |
| 13 | OAKL | OAKLEY DIE & MOLD CO INC | | | SCAC4 |
| 14 | OAKP | OAKLAND PORT SERVICES CORP | | | SCAC4 |
| 15 | OAKQ | OAK PARK TRANSFER | | | SCAC3 |
| 16 | OAKT | OAKS TRAILER TOWING | | | SCAC3 |
| 17 | OAKT | Oakville Transit | | CDN | TRAFFIC |
| 18 | OAKU | OAK RIDGE NATIONAL LABORATORY | | USA | BIC |
| 19 | OAKU | OAKSHOTT LIMITED | | | SCAC3 |
| 20 | OAKV | OAKS VAN LINES | | | SCAC3 |
| 21 | OAKV | OAKHAVEN RANCH INC | | | SCAC4 |
| 22 | OAKW | OAKWOOD TRUCKING CORP | | | SCAC3 |
| 23 | OAKY | OAKRIDGE TRUCKING | | | SCAC4 |
