| 1 | C2 | Mountain Air Cargo, Inc. | ICAO: MTN, Callsign: Mountain, Designator C2* recalled by IATA. | USA | AVCODES |
| 2 | C2 | Air Caribbean Limited | ICAO: CBB, Callsign: Ibis, | TT | AVCODES |
| 3 | C2 | Air Luxor STP | ICAO: ALU, Callsign: Luxorjet, | STP | AVCODES |
| 4 | C2 | Ceiba Intercontinental | ICAO: CEL, Callsign: Ceiba Line, IATA Prefix: 304, | GQ | AVCODES |
| 5 | C2C | c2c Rail (former LTS Rail Ltd.) | 1999: 128km standard gauge, electrified at 25kV 50Hz c2c is a train operating company that provides train services, on a franchise basis, on the London, Tilbury & Southend line from Fenchurch Street in the City of London to East London and the entire length of the northern Thames Gateway area including Basildon, Chafford Hundred (for Lakeside), Tilbury and Southend. | GB | TRAFFIC |
