| 1 | RBK | Rio Baker | Callsign: Riobaker, | RCH | AVCODES |
| 2 | RBK | Regionalbahn Kassel GmbH | Kassel | D | privat-bahn.de |
| 3 | RBK | Reginalbahn Kassel | | D | TRAFFIC |
| 4 | RBK | Regionalbahn Kassel GmbH | | DE | VKM |
| 5 | RBKB | R B KIRKCONNELL BROS LTD | | | PWRC |
| 6 | RBKB | READS-BROOKS RED BALL INC | | | SCAC4 |
| 7 | RBKC | RAVENNA BULK CARRIERS INC. | | | SCAC3 |
| 8 | RBKC | RBK CONSTRUCTION INC | | | SCAC4 |
| 9 | RBKD | ROBERTS, KEITH TRUCKING LTD | | | SCAC4 |
| 10 | RBKF | RIVERBROOK FARMS INC | | | SCAC4 |
| 11 | RBKG | ROBERTS TRUCKING | | | SCAC3 |
| 12 | RBKG | REBAK BROKERAGE LLC | | | SCAC4 |
| 13 | RBKI | REVELLE, BILL TRUCKING INC | | | SCAC3 |
| 14 | RBKN | ROBERTS & SONS TRUCKING INC | | | SCAC3 |
| 15 | RBKN | R B K TRUCKING INC | | | SCAC4 |
| 16 | RBKR | RED BANK RAILROAD COMPANY (PITTSBURG & SHAWMUT RAILROAD CO.) | | | PWRC |
| 17 | RBKR | RED BANK RAILROAD COMPANY | | | SCAC3 |
| 18 | RBKT | ROGERS, BUCK TRAVEL SERVICE INC | | | SCAC3 |
| 19 | RBKU | RABANCO COMPANIES | | | SCAC4 |
| 20 | RBKX | Red Bank R.R. Co. | 1/1994 | | NAKINA |
| 21 | RBKX | Red Bank R.R. Co. | Jan-94 | | NRHS |
| 22 | RBKX | RED BANK RAILROAD CO. | | | PWRC |
| 23 | RBKY | ROBERTSON TRUCKING | | | SCAC4 |
