| 1 | RRP | *RAILROAD PASSENGER CAR SERVICE | | | PWRC |
| 2 | RRP | *RETIRED 05-15-92 ATP (0938) | | | PWRC |
| 3 | RRP | Railroad Passenger Cars Service | | USA | TRAFFIC |
| 4 | RRPC | R & R TRANSPORT INC | | | SCAC3 |
| 5 | RRPD | RANSOM, ROBERT PRODUCE | | | SCAC3 |
| 6 | RRPD | R & R PICK-UP & | | | SCAC4 |
| 7 | RRPG | R & R PACKAGING INC | | | SCAC4 |
| 8 | RRPI | R & R PHILLIPS TRUCKING | | | SCAC3 |
| 9 | RRPI | ROY, RICK PRODUCTS INC | | | SCAC4 |
| 10 | RRPJ | R & R PLASTIC INJECTION CONSULTANTS | | | SCAC4 |
| 11 | RRPL | R & R PLUS INC | | | SCAC4 |
| 12 | RRPN | R & R TRANSPORTATION INC | | | SCAC3 |
| 13 | RRPO | R & R PALLET OF GARDEN CITY INC | | | SCAC4 |
| 14 | RRPQ | R & R PRODUCE INC | | | SCAC4 |
| 15 | RRPR | RAYMOND ENTERPRISES SA | | | SCAC4 |
| 16 | RRPT | R & R TRANSPORTATION | | | SCAC3 |
| 17 | RRPT | R & R TRANSPORTATION INC | | | SCAC4 |
| 18 | RRPU | RESPOL RESINAS S.A. | | P | BIC |
| 19 | RRPX | RR Power Leasing LLC | added 10/2003; eliminated 1/2004; 7/2005 (not listed) | | NAKINA |
| 20 | RRPX | Ranger Refining & Pipe Line Co. | 8/1920-7/1923 | | NAKINA |
| 21 | RRPX | *RANGER REFINING & PIPE LINE CO. | | | PWRC |
| 22 | RRPX | +RR POWER LEASING LLC | | | PWRC |
| 23 | RRPX | Railroad Power Leasing | | | RSRV |
| 24 | RRPX | RR POWER LEASING LLC | | | SCAC4 |
| 25 | RRPX | Rail Road Power Leasing | | USA | TRAFFIC |
| 26 | RRPY | RIOUX, RUDY P | | | SCAC4 |
