| 1 | COC | Firma Conseta | Callsign: Conseta Air, | D | AVCODES |
| 2 | COCA | CHAMBERS OIL COMPANY INC | | | SCAC3 |
| 3 | COCB | COLUMBIANA COUNTY MOTOR CLUB INC | | | SCAC3 |
| 4 | COCC | COMMON CENTS COURIER INC | | | SCAC4 |
| 5 | COCD | COUNTS COACHES & TOURS INC | | | SCAC3 |
| 6 | COCD | COMMAND FREIGHT ENTERPRISES | | | SCAC4 |
| 7 | COCG | COLORADO AIR CARGO INC | | | SCAC3 |
| 8 | COCG | COLORADO AIR CARGO INC | | | SCAC4 |
| 9 | COCH | COACH TRANSPORT INC | | | SCAC4 |
| 10 | COCI | CITY OF CLEVELAND | | | SCAC3 |
| 11 | COCJ | CONTRACT COURIER SERVICES INC | | | SCAC3 |
| 12 | COCL | COSTA CRUISE LINES NA | | | SCAC4 |
| 13 | COCM | CONTRACTUAL CARRIERS INC | | | SCAC3 |
| 14 | COCM | CONTRACTUAL CARRIERS INC | | | SCAC4 |
| 15 | COCN | COLUMBUS-CINCINNATI TRUCKING CO, TH | | | SCAC3 |
| 16 | COCN | CORRIGAN OIL CO NO II | | | SCAC4 |
| 17 | COCO | COURTESY CONTAINER CORP | | | SCAC3 |
| 18 | COCO | COLONIAL CONSOLIDATED INC | | | SCAC4 |
| 19 | COCP | CONCORD TRUCKING COMPANY | | | SCAC3 |
| 20 | COCP | CONCORD TRUCKING COMPANY | | | SCAC4 |
| 21 | COCQ | CONTRACT CARRIERS CORP | | | SCAC3 |
| 22 | COCQ | COATES, MICHAEL | | | SCAC4 |
| 23 | COCR | COOKIE CARRIERS INC | | | SCAC4 |
| 24 | COCSA | COMPAÑIA DE OBRAS CASTILLEJOS, S.A. | | ES | VKM |
| 25 | COCT | COOK COAL TERMINAL | | | PWRC |
| 26 | COCU | SAMSKIP MCL BV | | NL | BIC |
| 27 | COCU | QEEST NORTH SEA LINE BV | | | SCAC4 |
| 28 | COCV | COASTAL CARRIERS INC. | | | SCAC3 |
| 29 | COCW | CONTRACT CARRIERS INC | | | SCAC3 |
| 30 | COCX | Chevron Oronite Co., L.L.C. | added 1/2001; 7/2005 | | NAKINA |
| 31 | COCX | California Cotton Oil Corp. | eliminated 7/1965 | | NAKINA |
| 32 | COCX | Continental Chemical Co. | added 4/1973; 1/1975-1/1980; eliminated 4/1980 | | NAKINA |
| 33 | COCX | California Cotton Oil Co. | 7/1935-4/1961 | | NAKINA |
| 34 | COCX | Carbo Oil Co. (Rock Island Petroleum Co.) | 8/1920 | | NAKINA |
| 35 | COCX | California Cotton Oil Corp. | Apr-38 | | NRHS |
| 36 | COCX | California Cotton Oil Co. | 1/52-4/61 | | NRHS |
| 37 | COCX | California Cotton Oil Corporation | eliminated 7/65 | | NRHS |
| 38 | COCX | Continental Chemical Co. | added 4/73; 1/75-1/80; eliminated 4/80 | | NRHS |
| 39 | COCX | Chevron Oronite Co., L.L.C. | added 1/2001 | | NRHS |
| 40 | COCX | *ROCK ISLAND PETROLEUM CO. [CARBO OIL CO.] | | | PWRC |
| 41 | COCX | *CALIFORNIA COTTON OIL CORP. | | | PWRC |
| 42 | COCX | *CONTINENTAL CHEMICAL CO. | | | PWRC |
| 43 | COCX | +CHEVRON ORONITE COMPANY, LLC | | | PWRC |
| 44 | COCX | Chevron Oronite | | | RSRV |
| 45 | COCX | CHEVRON ORONITE COMPANY LLC | | | SCAC4 |
| 46 | COCY | CONCRETE MATERIALS SUPPLY INC | | | SCAC3 |
| 47 | COCZ | CONTINENTAL OIL CO. | | | PWRC |