| 1 | ICX | International Charter Xpress Ltd Co. | Callsign: Intex, | USA | AVCODES |
| 2 | ICX | International Charter Xpress | | | ICAO1 |
| 3 | ICX | Industrial Chemicals Transit Co. | 1/1946-4/1947 | | NAKINA |
| 4 | ICX | INDUSTRIAL CHEMICALS TRANSIT CO. | | | PWRC |
| 5 | ICXI | INTEGRITY CARTAGE & EXPEDITED INC | | | SCAC4 |
| 6 | ICXN | ICT TRANSPORTATION INC | | | SCAC4 |
| 7 | ICXS | ILLINOIS - CALIFORNIA EXP | | | PWRC |
| 8 | ICXS | INLAND CONTAINER EXPRESS | | | SCAC4 |
| 9 | ICXT | INTERSTATE CARRIER XPRESS, INC | | | SCAC1 |
| 10 | ICXT | INTERSTATE CARRIER XPRESS | | | SCAC4 |
| 11 | ICXX | INDIANTOWN COGENERATION, LP | | | PWRC |
| 12 | ICXX | INDIANTOWN COGENERATION LP | | | SCAC4 |
