| 1 | RRE | Aerotransportes Internacionales de Torreon S.A. de C.V. | Callsign: Aero Torreon, | MEX | AVCODES |
| 2 | RRE | Aerotransportes Internacionales De Torreon | | | ICAO1 |
| 3 | RREB | RAPID RESPONSE INC | | | SCAC4 |
| 4 | RREC | R & R ENTERPRISES | | | SCAC4 |
| 5 | RRED | ROADRUNNER EXPRESS DELIVERY SERVICE | | | SCAC3 |
| 6 | RREH | RANDOL INC | | | SCAC4 |
| 7 | RREI | ROAD RUNNER EXPRESS INC | | | SCAC3 |
| 8 | RREJ | R & R EXPRESS LOGISTICS INC | | | SCAC4 |
| 9 | RREK | ROAD RUNNER EXPRESS | | | SCAC4 |
| 10 | RREM | R & R EQUIPMENT LEASING LLC | | | SCAC4 |
| 11 | RREN | R & R ENTERPRISE INC | | | SCAC4 |
| 12 | RREP | R & R EXPRESS INC | | | SCAC3 |
| 13 | RREQ | ROLLIN'R ENTERPRISES INC | | | SCAC4 |
| 14 | RRER | RANSOM, RICK ENTERPRISES INC | | | SCAC4 |
| 15 | RRES | R & R EXPRESS | | | SCAC3 |
| 16 | RRET | ROAD RUNNER TRANSPORTATION INC | | | SCAC3 |
| 17 | RREV | RED RIGG EXPRESS INC | | | SCAC4 |
| 18 | RREW | RAMBLIN ROSE EXPRESS | | | SCAC4 |
| 19 | RREX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 20 | RREX | General Electric Railcar Services Corp. | added 10/1992; 1/1994; eliminated 1/2000 | | NAKINA |
| 21 | RREX | Itel Rail Corp. | eliminated 10/1992 | | NAKINA |
| 22 | RREX | Rex Railways, Inc. (transferred to Itel Rail Corp.) | added 10/1988 | | NAKINA |
| 23 | RREX | Rex Railways, Inc. | added 7/1978; 1/1980; eliminated 10/1988 | | NAKINA |
| 24 | RREX | Rex Railways, Inc. | added 7/78; 1/80; eliminated 10/88 | | NRHS |
| 25 | RREX | Rex Railways, Inc. (transferred to Itel Rail Corp.) | added 10/88 | | NRHS |
| 26 | RREX | Itel Rail Corp. | eliminated 10/92 | | NRHS |
| 27 | RREX | General Electric Railcar Services Corp. | added 10/92; 1/94; eliminated 1/2000 | | NRHS |
| 28 | RREX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 29 | RREX | *REX RAILWAYS INC. | | | PWRC |
| 30 | RREX | +(NATX) GENERAL ELECTRIC RAIL SERVICES CORPORATION [ITEL RAIL CORP.] | | | PWRC |
| 31 | RREX | Rex Railway | | | RSRV |
| 32 | RREX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
