| 901 | DCFI | D C F AND B INC | | | SCAC4 |
| 902 | DCFP | DESSERT CRAFT FOOD PRODUCTS | | | SCAC4 |
| 903 | DCFR | DIRECT MOTOR FREIGHT, INC | | | SCAC1 |
| 904 | DCFR | DIRECT MOTOR FREIGHT INC | | | SCAC4 |
| 905 | DCFS | D & C FARMS | | | SCAC4 |
| 906 | DCFT | DOUBLE C FRUIT INC | | | SCAC4 |
| 907 | DCFX | The CIT Group/Capital Finance, Inc. | added 1/2006 | | NAKINA |
| 908 | DCFX | PLM International, Inc. | added 4/1991; 1/1994-7/2005; eliminated 1/2006 | | NAKINA |
| 909 | DCFX | PLM Railcar Management Services Canada Ltd. | added 1/1990; eliminated 4/1991 | | NAKINA |
| 910 | DCFX | PLM International, Inc. | added 4/91; 1/94-7/2000 | | NRHS |
| 911 | DCFX | PLM Railcar Management Services Canada Ltd. | added 1/90; eliminated 4/91 | | NRHS |
| 912 | DCFX | THE CIT GROUP/CAPITAL FINANCE, INC. [(PLMX) PLM INTERNATIONAL, INC.] | | | PWRC |
| 913 | DCFX | PLM International | | | RSRV |
| 914 | DCFX | CIT GROUP/CAPITAL FINANCE INC, THE | | | SCAC4 |
| 915 | DCGD | DCG DISTRIBUTION CORP | | | SCAC4 |
| 916 | DCH | DC Aviation Switzerland AG | Callsign: Alpine Star, Merged with BHS Helicopterservice to form BHS Aviation Group. ICAO designator changed from HLK. ICAO callsign changed from Heli-Link. Name changed from Heli-link Helikopter AG. | CH | AVCODES |
| 917 | DCHA | DC LOGISTICS | | | SCAC4 |
| 918 | DCHE | DANIELS CHARTERS | | | SCAC4 |
| 919 | DCHF | DESIGNING CHRISTMAS | | | SCAC4 |
| 920 | DCHG | DUTCHMAN TRUCKING | | | SCAC4 |
| 921 | DCHI | DUBOIS CHEMICALS INC | | | SCAC4 |
| 922 | DCHK | DITECH TRANSPORTATION INC | | | SCAC4 |
| 923 | DCHN | DUTCHESS TERMINALS INC | | | SCAC4 |
| 924 | DCHQ | DAIRY CHEQ INC | | | SCAC4 |
| 925 | DCHR | DERCO HORTICULTURE INC | | | SCAC4 |
| 926 | DCHS | DAIICHI CHUO SHIPPING (AMERICA) INC | | | SCAC4 |
| 927 | DCHT | DCT CHAMBERS TRUCKING LTD | | | SCAC4 |
| 928 | DCHU | DMITRIEVSKY CHEMICAL PLANT - PRODUCTION | | RUS | BIC |
| 929 | DCI | Des Moines & Central Iowa Ry. Co. | 4/1938-10/1966 & 1/1975-1/1980; eliminated 1/1984 | | NAKINA |
| 930 | DCI | Des Moines & Central Iowa Ry. Co. | 4/38-10/66 & 1/75-1/80 | | NRHS |
| 931 | DCI | DES MOINES & CENTRAL IOWA RWY. CO. | | | PWRC |
| 932 | DCI | Des Moines and Central Iowa | | | RSRV |
| 933 | DCIA | DADEN CARRIERS INC | | | SCAC4 |
| 934 | DCIC | DS COMMERCIAL INC | | | SCAC4 |
| 935 | DCIG | DCI LOGISTICS LLC | | | SCAC4 |
| 936 | DCIH | DCI DEDICATED CARRIERS INTERNATIONA | | | SCAC4 |
| 937 | DCIJ | D C I INC | | | SCAC4 |
| 938 | DCIL | DCT | | | SCAC4 |
| 939 | DCIN | D C INTERNATIONAL INC | | | PWRC |
| 940 | DCIO | DIVERSIFIED CONTRACTORS INC | | | SCAC4 |
| 941 | DCIQ | D C I | | | SCAC4 |
| 942 | DCIR | DIRECTLINK COURIER INC | | | SCAC4 |
| 943 | DCIT | DCI TRANSPORT LLC | | | SCAC4 |
| 944 | DCIU | DANA CONTAINER INC. | | USA | BIC |
| 945 | DCIU | DANA CONTAINER INCORPORATED | | | PWRC |
| 946 | DCIU | Dana Container | | | RSRV |
| 947 | DCIU | DANA CONTAINER INC | | | SCAC4 |
| 948 | DCIX | Danella Construction Corp. | added 7/1988; 1/1994; added 4/1997; 7/2000-7/2005; eliminated 1/2008 | | NAKINA |
| 949 | DCIX | Danella Construction Corp. | added 7/88; 1/94; added 4/97; 7/2000 | | NRHS |
| 950 | DCIX | DANELLA CONSTRUCTION CORPORATION | | | PWRC |
| 951 | DCIX | Danella Construction Corporation | | | RSRV |
| 952 | DCJD | DAVIS, CLIFFORD JR | | | SCAC4 |
| 953 | DCKA | DANCE TRUCKING INC | | | SCAC4 |
| 954 | DCKC | DOCKS INC | | | SCAC4 |
| 955 | DCKD | DECK, DON | | | SCAC4 |
| 956 | DCKE | DECKER INC | | | SCAC4 |
| 957 | DCKG | DECKER MANUFACTURING LTD | | | SCAC4 |
| 958 | DCKI | D ROCK INC | | | SCAC4 |
| 959 | DCKL | DIRECT CONNECTION TRUCKING LLC | | | SCAC4 |
| 960 | DCKM | DIRCKS MOVING SERVICE INC | | | SCAC4 |
| 961 | DCKN | DICKEY, HAROLD TRANSPORT INC | | | SCAC4 |
| 962 | DCKP | DECK TRANSPORT (1982) LTD | | | SCAC4 |
| 963 | DCKR | DECKER TRUCK SERVICE INC | | | SCAC4 |
| 964 | DCKS | DOCKSIDE TRANSFER INC | | | SCAC4 |
| 965 | DCKW | DUCK CREEK TRANSPORTATION LLC | | | SCAC4 |
| 966 | DCKY | DUCKYS TOWING SERVICE INC | | | SCAC4 |
| 967 | DCL | Transportes Aereos Don Carlos Ltda. | Callsign: Don Carlos, | RCH | AVCODES |
| 968 | DCL | Transportes Aereos Don Carlos | | | ICAO1 |
| 969 | DCLA | DB CARTAGE LLC | | | SCAC4 |
| 970 | DCLC | D C LOGISTICS LLC | | | SCAC4 |
| 971 | DCLD | DECOR CABINETS LTD | | | SCAC4 |
| 972 | DCLE | D C LEER | | | SCAC4 |
| 973 | DCLF | DC CARGO LLC | | | SCAC4 |
| 974 | DCLG | DEDICATED LOGISTICS INC | | | SCAC4 |
| 975 | DCLH | DEDICATED LOGISTICS INC (REGIONAL) | | | SCAC4 |
| 976 | DCLI | DICEX LOGISTICA S A DE C V | | | SCAC4 |
| 977 | DCLJ | DIRECT CARTAGE LLC | | | SCAC4 |
| 978 | DCLK | DIRECT CONNECT LOGISTIX INC | | | SCAC4 |
| 979 | DCLL | DILLER COMPANY LLC | | | SCAC4 |
| 980 | DCLM | DCL INTERNATIONAL INC | | | SCAC4 |
| 981 | DCLN | DARCOL INTERNATIONAL INC | | | SCAC4 |
| 982 | DCLO | DOMINAN CHAD LLC | | | SCAC4 |
| 983 | DCLR | Delaware Coast Line R.R. Co. | added 10/1983; 1/1994; eliminated 1/1995 | | NAKINA |
| 984 | DCLR | Delaware Coast Line R.R. Co. | added 10/83; 1/94; eliminated 1/95 | | NRHS |
| 985 | DCLR | DELAWARE COAST LINE RAILROAD CO. | | | PWRC |
| 986 | DCLR | Delaware Coast Line Railroad | | | RSRV |
| 987 | DCLR | Delaware Coast Line Railroad | | USA | TRAFFIC |
| 988 | DCLS | DIRECT CONNECT LOGISTICS | | | SCAC4 |
| 989 | DCLU | DEUCON CHEMIELOGISTIK GMBH | | D | BIC |
| 990 | DCLU | DUTCH CONTAINER LEASING B.V. | | | PWRC |
| 991 | DCLU | Dutch Container Leasing | | | RSRV |
| 992 | DCLU | UNIT EQUIPMENT SERVICES AG | | | SCAC4 |
| 993 | DCLW | DIAMOND COORDINATORS LLC | | | SCAC4 |
| 994 | DCLX | Dow Chemical Canada, Inc. | added 4/1997; 7/2000-7/2005 | | NAKINA |
| 995 | DCLX | Procor Ltd. | added 4/1977; 1/1980-1/1994 | | NAKINA |
| 996 | DCLX | Procor Ltd. | 1/80-1/94 | | NRHS |
| 997 | DCLX | Dow Chemical Canada, Inc. | added 4/97; 7/2000 | | NRHS |
| 998 | DCLX | *(PROX) PROCOR LIMITED | | | PWRC |
| 999 | DCLX | +DOW CHEMICAL CANADA INC | | | PWRC |
| 1000 | DCLX | Procor Ltd. (Dow Chemical Canada) | | | RSRV |
