| 1 | XCT | Aero Costa Taxi Aereo, S.A. de C.V. | Callsign: Aerocostaxi, | MEX | AVCODES |
| 2 | XCT | Aero Costa Taxi Aereo | | | ICAO1 |
| 3 | XCTA | CHICAGO TRANSIT AUTHORITY | | | PWRC |
| 4 | XCTG | XCELERATED TRANSPORTATION GROUP LLC | | | SCAC4 |
| 5 | XCTS | CLEVELAND TRANSIT SYSTEM | | | PWRC |
| 6 | XCTU | DIMC - DUBAI INTERNATIONAL MARINE CLUB | | UAE | BIC |
| 7 | XCTU | (XTRZ) XTRA INTERMODAL | | | PWRC |
| 8 | XCTU | XTRA Intermodal (WPPA Ltd) | | | RSRV |
| 9 | XCTZ | XTRA INTERMODAL | | | PWRC |
| 10 | XCTZ | XTRA Intermodal | | | RSRV |
| 11 | XCTZ | XTRA INTERMODAL | | | SCAC4 |
