| 1 | DX | Danish Air Transport | ICAO: DTR, Callsign: Danish, Designator DX* reinstated by IATA | DK | AVCODES |
| 2 | DX | Agency Danair | Callsign: Danish, | DK | AVCODES |
| 3 | DX | Danair A/S | ICAO: DEN, Callsign: Danish, | DK | AVCODES |
| 4 | DXAL | DIXIE WHOLESALE OIL CO | | | SCAC4 |
| 5 | DXAT | DANS XPRESS SERVICES LLC | | | SCAC4 |
| 6 | DXBI | DIXON BROS INC | | | SCAC4 |
| 7 | DXBO | DIRECT EXPRESS SERVICE LLC | | | SCAC4 |
| 8 | DXBU | DUBOX INTERNATIONAL CONTAINER TRADING LLC | | UAE | BIC |
| 9 | DXCC | DDRS EXPRESS LLC | | | SCAC4 |
| 10 | DXCE | DIESEL EXPRESS INC | | | SCAC4 |
| 11 | DXCI | DENSONS TRANSPORTATION CO INC | | | SCAC4 |
| 12 | DXCN | DIRECT EXPRESS INC | | | SCAC4 |
| 13 | DXCQ | DEXTEROUS CARRIER INC | | | SCAC4 |
| 14 | DXCS | DRAKES BATTER MIX COMPANY | | | SCAC4 |
| 15 | DXCU | Coast Storage & Containers | | | RSRV |
| 16 | DXDI | DEMENAGEME | | | SCAC4 |
| 17 | DXED | DANAX EXPRESS LTD | | | SCAC4 |
| 18 | DXEI | DXE LOGISTE INC | | | SCAC4 |
| 19 | DXEM | DIXIE MOVING & STORAGE INC | | | SCAC4 |
| 20 | DXEO | DAMER EXPRESS INC | | | SCAC4 |
| 21 | DXES | DLUX EXPRESS LTD | | | SCAC4 |
| 22 | DXET | DIXIE TRUCK CENTRE LTD | | | SCAC4 |
| 23 | DXFD | DEXEL CRAFTED | | | SCAC4 |
| 24 | DXFI | DIRECT TRANSFERS INC | | | SCAC4 |
| 25 | DXFR | DIXIE EXPRESS | | | SCAC4 |
| 26 | DXFT | DELTAMAX FREIGHT SYSTEM CO LTD | | | SCAC4 |
| 27 | DXGI | DIXIE LOGISTICS INC | | | SCAC4 |
| 28 | DXH | East Star Airlines Limited Corporation | IATA: 8C, Callsign: East Star, The airline received its air-operators certificate from the CAAC on 10 June 2005, and started operations on 19 May 2006. Ceased operations on 15 March 2009. | PRC | AVCODES |
| 29 | DXH | East Star Airlines | | | ICAO1 |
| 30 | DXHR | DIXIE OHIO EXPRESS INC | | | SCAC4 |
| 31 | DXIE | DIXIE TRUCKING COMPANY, INC | | | SCAC1 |
| 32 | DXIE | DIXIE TRUCKING COMPANY, INC | | | SCAC4 |
| 33 | DXIL | DIXIELAND TOURS & CRUISES | | | SCAC4 |
| 34 | DXIN | DIAMOND TRANSPORT INC | | | SCAC4 |
| 35 | DXIO | DIXIE OIL CO OF ALABAMA INC | | | SCAC4 |
| 36 | DXIQ | DX XPRESS INC | | | SCAC4 |
| 37 | DXIS | DF XPRESS INC | | | SCAC4 |
| 38 | DXIU | PT. DEXIN STEEL INDONESIA | | RI | BIC |
| 39 | DXJR | DIXON, J JR COMPANIES INC | | | SCAC4 |
| 40 | DXLL | DIAMOND XPRESS LLC | | | SCAC4 |
| 41 | DXLT | DIXIELAND TRUCKING CO | | | SCAC4 |
| 42 | DXMY | DIXON MEYERS BUS TRANSPORTATION | | | SCAC4 |
| 43 | DXMZ | DX MARKETING & REFINING CO. | | | PWRC |
| 44 | DXNC | DIXON CONST CO INC | | | SCAC4 |
| 45 | DXNJ | DIXON, JOAN STUDIOS | | | SCAC4 |
| 46 | DXNP | DIMENSION TRANSPORTATION LLC | | | SCAC4 |
| 47 | DXNQ | DIAMOND TRANSPORTATION INC | | | SCAC4 |
| 48 | DXOC | DIXIE OIL COMPANY | | | SCAC4 |
| 49 | DXON | DIXON AUTO TRANSPORT INC | | | SCAC4 |
| 50 | DXP | Dallas Express Airlines, Inc. | Callsign: Dallas Express, | USA | AVCODES |
| 51 | DXP | Dallas Express Airlines | | | ICAO1 |
| 52 | DXPB | DELTA TRANSPORTATION LLC | | | SCAC4 |
| 53 | DXPL | DESTINATION EXPRESS LLC | | | SCAC4 |
| 54 | DXPM | DIXIE PLYWOOD COMPANY | | | SCAC4 |
| 55 | DXPN | DIAMOND EXPRESS INC | | | SCAC4 |
| 56 | DXPO | DIXIE PAPER CO INC | | | SCAC4 |
| 57 | DXPP | DELUXE PAPER PRODUCTS LTD | | | SCAC4 |
| 58 | DXPR | DEXTER PRODUCTS INC | | | SCAC4 |
| 59 | DXPT | DISTRIBUTION EXPORT LOGISTICS INC | | | SCAC4 |
| 60 | DXRS | DEEP XPRESS LLC | | | SCAC4 |
| 61 | DXRT | DIXIE ROSE TRUCKING | | | SCAC4 |
| 62 | DXSA | DEXSA | | | SCAC4 |
| 63 | DXSC | DIX SHIPPING CO INC | | | SCAC4 |
| 64 | DXSI | DELTA EXPRESS SYSTEMS INC | | | SCAC4 |
| 65 | DXSV | DIXIE SALES AND SERVICE LLC | | | SCAC4 |
| 66 | DXSY | DIRECT XPRESS SYSTEM INC | | | SCAC4 |
| 67 | DXT | Air Management Group, JSC | Callsign: Dexter, | RUS | AVCODES |
| 68 | DXTB | DIXIE TRUCKING INC | | | SCAC4 |
| 69 | DXTC | DAD TRANSPORT LLC | | | SCAC4 |
| 70 | DXTF | DALEXA TRANSFER | | | SCAC4 |
| 71 | DXTI | DIXIE TRANSPORT INC | | | SCAC4 |
| 72 | DXTN | DALE TRANSPORT LLC | | | SCAC4 |
| 73 | DXTO | DIXON TOOL CO LTD | | | SCAC4 |
| 74 | DXTT | DOUBLE XL TRANSPORTATION INC | | | SCAC4 |
| 75 | DXTU | DIOXITEK SA | | RA | BIC |
| 76 | DXTU | DIOXITEK SA | | | SCAC4 |
| 77 | DXWI | DELUXE INTERNATIONAL GROUP | | | SCAC4 |
| 78 | DXXI | DIXON EXPRESS INC | | | SCAC4 |
| 79 | DXXT | DXX TRANSPORT | | | SCAC4 |
| 80 | DXZE | DIXIE RIVER RAILROAD CO. | | | PWRC |
