| 1 | DCX | Daimler-Chrysler, Inc. | Callsign: Daimler, | USA | AVCODES |
| 2 | DCX | Daimler-Chrysler | | | ICAO1 |
| 3 | DCX | Diamond Alkali Co. of California | 1/1952-7/1954; eliminated 7/1956 | | NAKINA |
| 4 | DCX | Diamond Alkali Co. of California | 1/52; eliminated 7/56 | | NRHS |
| 5 | DCX | DIAMOND ALKALI OF CALIFORNIA | | | PWRC |
| 6 | DCXE | DEC EXPRESS | | | SCAC4 |
| 7 | DCXI | DCX INC | | | SCAC4 |
| 8 | DCXL | DOUBLE C TRANSPORTS LLC | | | SCAC4 |
| 9 | DCXN | DEALERS CHOICE TRANSPORT INTERNATIO | | | SCAC4 |
| 10 | DCXO | D & C TRANSPORT | | | SCAC4 |
| 11 | DCXR | DC EXPRESS | | | SCAC4 |
| 12 | DCXT | DOMESTIC TRANSPORT INC | | | SCAC4 |
| 13 | DCXU | NOURYON PPC AB | | S | BIC |
| 14 | DCXU | EKA CHEMICALS AB | | | SCAC4 |
