| 1 | IRX | Aria Tour | Callsign: Aria, | IR | AVCODES |
| 2 | IRX | Aria Tour | | | ICAO1 |
| 3 | IRX | Wasatch Oil Co., Idaho Division | 1/1950-7/1954 | | NAKINA |
| 4 | IRX | Idaho Refining Co. | 1/1941-4/1947 | | NAKINA |
| 5 | IRX | Independent Refining Co. | 8/1920-7/1923 | | NAKINA |
| 6 | IRX | Wasatch Oil Co., Idaho Division | Jan-52 | | NRHS |
| 7 | IRX | *INDEPENDENT REFINING CO. | | | PWRC |
| 8 | IRX | *WASATCH OIL CO. [IDAHO REFINING CO.] | | | PWRC |
| 9 | IRXL | IRMAR TRANSPORT LLC | | | SCAC4 |
