| 1 | IRE | Pariz Air | Callsign: Parizair, | IR | AVCODES |
| 2 | IRE | Pariz Air | | | ICAO1 |
| 3 | IREB | IRELAND, ROBERT TRUCKING | | | SCAC4 |
| 4 | IREL | IRELAND, S D CONCRETE | | | SCAC4 |
| 5 | IRES | IRI TRUCKING | | | SCAC4 |
| 6 | IREX | IRECO, Inc. | added 10/1986; eliminated 1/1994; 1/1994-7/2005 (not listed) | | NAKINA |
| 7 | IREX | Indianapolis Refrigerator Express (Indianapolis Abbatoir Co.) | 8/1920-7/1930 | | NAKINA |
| 8 | IREX | IRECO, Inc. | added 10/86; eliminated 1/94; 7/2000 | | NRHS |
| 9 | IREX | *INDIANAPOLIS ABBATOIR CO. (INDIANAPOLIS REFRIGERATOR EXPRESS) | | | PWRC |
| 10 | IREX | *DYNO NOBEL, INC. | | | PWRC |
| 11 | IREX | +IRECO INC. [ILLINOIS RAILWAY EQUIPMENT CO.] | | | PWRC |
| 12 | IREX | IRECO | | | RSRV |
| 13 | IREX | DYNO NOBEL, INC. | | | SCAC4 |
| 14 | IREX | Irex / Meteor | City: Sosnowiec | PL | TRAFFIC |
