| 13401 | CPNR | CAPENER TRUCKING INC | | | SCAC4 |
| 13402 | CPNS | CARPENTER & SONS | | | SCAC3 |
| 13403 | CPNS | COUP & SONS | | | SCAC4 |
| 13404 | CPNT | CARPENTER TRANSFER INC | | | SCAC3 |
| 13405 | CPNU | CARGO-PARTNER AG | | | SCAC4 |
| 13406 | CPNV | COMPANIA NAVIERA AGMARESA S A | | | SCAC3 |
| 13407 | CPNY | COMPAGNIE NATIONAL ALGERIENNE DE NAVIGATION | | | SCAC3 |
| 13408 | CPNY | COMPAGNIE NATIONALE ALGERIENNE DE N | | | SCAC4 |
| 13409 | CPO | Corporate Aircraft Company | Callsign: Mokan, | USA | AVCODES |
| 13410 | CPO | Corporate Aircraft Company | | | ICAO1 |
| 13411 | CPOB | CAPITOL TOURS INC | | | SCAC3 |
| 13412 | CPOD | CAPODICE TRUCK LEASING | | | SCAC3 |
| 13413 | CPOE | COOPER OIL CO INC | | | SCAC4 |
| 13414 | CPOG | CENTERPORT INC | | | SCAC3 |
| 13415 | CPOG | CENTERPORT INC | | | SCAC4 |
| 13416 | CPOH | COMPUTER TRANSPORT OF OHIO INC | | | SCAC3 |
| 13417 | CPOH | CARRION PICOS, HECTOR | | | SCAC4 |
| 13418 | CPOI | C A P TRANSPORT INC | | | SCAC3 |
| 13419 | CPOJ | C A T TRANSPORTATION INC | | | SCAC3 |
| 13420 | CPOJ | CAPITAL LOGISTICS LLC | | | SCAC4 |
| 13421 | CPOK | CONTAINER PRODUCTS OF OKLAHOMA | | | SCAC3 |
| 13422 | CPOK | COSMIC POST INC | | | SCAC4 |
| 13423 | CPOL | CAPITOL TILE IMPORT CO INC | | | SCAC3 |
| 13424 | CPOL | CAPITAL OIL INC | | | SCAC4 |
| 13425 | CPOM | CAPITOL MOTOR SERVICE INC | | | SCAC3 |
| 13426 | CPON | CENTRE POINTE TRAVEL | | | SCAC3 |
| 13427 | CPOO | CONTAINER POOL INC | | | SCAC3 |
| 13428 | CPOP | COSMOPOLITAN TRAVEL SERVICE | | | SCAC3 |
| 13429 | CPOQ | CAMP TRUCKING CO INC | | | SCAC3 |
| 13430 | CPOR | CORPORATE COURIER INC | | | SCAC3 |
| 13431 | CPOS | CORPORATE TRAVEL SERVICES | | | SCAC3 |
| 13432 | CPOS | CAMPOS MARTINEZ, JOSE ARTURO | | | SCAC4 |
| 13433 | CPOU | CARGO-PARTNER GMBH | | A | BIC |
| 13434 | CPOV | CAMDEN PORT SERVICE INC | | | SCAC3 |
| 13435 | CPOV | CPS DISTRIBUTION SERVICE | | | SCAC4 |
| 13436 | CPOW | CANNON POWER TRANSMISSION | | | SCAC4 |
| 13437 | CPOX | Consumers Energy Co. | added 1/2007 | | NAKINA |
| 13438 | CPOX | Consumers Power Co. | added 7/1993; 1/1994; eliminated 1/1996; added 10/1996; eliminated 7/1997; 7/2000-7/2005 (not listed) | | NAKINA |
| 13439 | CPOX | Consumer's Power Co. | added 7/1979; 1/1980; eliminated 7/1993 | | NAKINA |
| 13440 | CPOX | Pennsylvania-Conley Tank Line a Division of General American Transportation Corp. | 4/1938 | | NAKINA |
| 13441 | CPOX | City Point Oil Terminal, Inc. | 7/1932-7/1937 | | NAKINA |
| 13442 | CPOX | City Point Oil Terminal, Inc. | Apr-38 | | NRHS |
| 13443 | CPOX | Consumer's Power Co. | added 7/79; 1/80; eliminated 7/93 | | NRHS |
| 13444 | CPOX | Consumers Power Co. | added 7/93; 1/94; eliminated 1/96; added 10/96; eliminated 7/97; 7/2000 | | NRHS |
| 13445 | CPOX | *CITY POINT OIL TERMINAL, INC. | | | PWRC |
| 13446 | CPOX | *PENNSYLVANIA-CONLEY TANK LINE DIV. GENERAL AMERICAN TRANSPORTATION CORP. | | | PWRC |
| 13447 | CPOX | +CONSUMERS ENERGY CO [CONSUMERS POWER COMPANY] | | | PWRC |
| 13448 | CPOX | Consumers Power | | | RSRV |
| 13449 | CPOX | CONSUMERS POWER COMPANY | | | SCAC4 |
| 13450 | CPOY | CARTER TRANSPORT | | | SCAC3 |
| 13451 | CPOY | COMPLETE TRANSPORT LLC | | | SCAC4 |
| 13452 | CPP | Carpathian Air Transport Ltd. | Callsign: Carpatian, Ceased operations 2002. Designator KC recalled by IATA. Designator changed from KC* | H | AVCODES |
| 13453 | CPP | Carpathian Air Transport Ltd. | IATA: KC, Callsign: Carpatian, Designator changed to KC | H | AVCODES |
| 13454 | CPP | Carpathian Air Transport Ltd. | IATA: KC, Callsign: Carpatian, Designator KC recalled by IATA. Designator changed from KC* | H | AVCODES |
| 13455 | CPP | Oulun Helikopteripalvelu Oy (Copterplus) | Callsign: Copterplus, | FIN | AVCODES |
| 13456 | CPP | Copterplus Finland Oy | Callsign: Copterplus, | FIN | AVCODES |
| 13457 | CPPA | COUDERSPORT & PORT ALLEGANY RR | | | PWRC |
| 13458 | CPPB | CLAPP, BOB | | | SCAC3 |
| 13459 | CPPC | CLIPPINGER CHEVROLET | | | SCAC3 |
| 13460 | CPPC | CONSOLIDATED PRECISION PRODUCTS S D | | | SCAC4 |
| 13461 | CPPD | CAPITAL PARCEL DELIVERY COMPANY | | | SCAC3 |
| 13462 | CPPD | CONSOLIDATED PIANO PURCHASING LTD | | | SCAC4 |
| 13463 | CPPE | CRIPPET TRANSPORT | | | SCAC3 |
| 13464 | CPPF | CRIPPEN, ARCHIE C | | | SCAC3 |
| 13465 | CPPF | CATERPILLAR PAVING PRODUCTS INC | | | SCAC4 |
| 13466 | CPPG | CLIPPER SHIPPING AGENCY INC | | | SCAC3 |
| 13467 | CPPG | COPPER COUNTRY CARTAGE LLC | | | SCAC4 |
| 13468 | CPPI | COPPER TRANSPORT INC | | | SCAC3 |
| 13469 | CPPJ | C A P TRANSPORTATION SERVICES | | | SCAC3 |
| 13470 | CPPJ | CATALINA PRECISION PRODUCTS | | | SCAC4 |
| 13471 | CPPK | CLIPPER TRUCKING | | | SCAC3 |
| 13472 | CPPK | Central Suburban Passenger Company | | RUS | TRAFFIC |
| 13473 | CPPL | CAPPARELLE TRUCKING | | | SCAC3 |
| 13474 | CPPM | COPE, PAUL INC | | | SCAC3 |
| 13475 | CPPM | CENTRAL PETROLEUM | | | SCAC4 |
| 13476 | CPPN | COPPINI, LEONARD JOHN | | | SCAC3 |
| 13477 | CPPN | COOPERATIVE PRODUCERS INC | | | SCAC4 |
| 13478 | CPPO | CIPPONERI, J W TRUCKING | | | SCAC3 |
| 13479 | CPPO | CANAL PETROLEUM PRODUCTS INC | | | SCAC4 |
| 13480 | CPPP | COMMERCIAL PIPE PRODUCTS INC | | | SCAC3 |
| 13481 | CPPP | CULPEPER TRANSPORT CO INC | | | SCAC4 |
| 13482 | CPPQ | CLIPPER MOTOR SERVICE INC | | | SCAC3 |
| 13483 | CPPR | COPPER STEAMSHIP COMPANY, THE | | | SCAC3 |
| 13484 | CPPR | COPPER STEAMSHIP COMPANY, THE | | | SCAC4 |
| 13485 | CPPS | CLIPPER SOUTH INC (AFFILIATE OF CLI | | | SCAC3 |
| 13486 | CPPS | CUPPS PRODUCE L L C | | | SCAC4 |
| 13487 | CPPT | CHOPPER EXPRESS INC | | | SCAC3 |
| 13488 | CPPT | CHOPPER EXPRESS INC | | | SCAC4 |
| 13489 | CPPU | CANADIAN PACIFIC RAILWAY COMPANY | | CDN | BIC |
| 13490 | CPPU | CP RAIL [CANADIAN PACIFIC LTD.] | | | PWRC |
| 13491 | CPPU | Canadian Pacific Railway | | | RSRV |
| 13492 | CPPU | CANADIAN PACIFIC RAILWAY CO | | | SCAC4 |
| 13493 | CPPV | CALTOP COOPERATIVE INC | | | SCAC3 |
| 13494 | CPPX | Consolidated Papers, Inc. | added 1/1975; 1/1975-1/1980; eliminated 1/1994; 1/1994 (not listed); 7/2000-7/2005 (not listed) | | NAKINA |
| 13495 | CPPX | Crystal Pearl Products Co. | 7/1937-4/1947 | | NAKINA |
| 13496 | CPPX | Crichton Pine Products Co. | 8/1920-7/1923 | | NAKINA |
| 13497 | CPPX | Crystal Pearl Products Co. | Apr-38 | | NRHS |
| 13498 | CPPX | Consolidated Papers, Inc. | added 1/75; 1/75-1/80; eliminated 1/94; 7/2000 | | NRHS |
| 13499 | CPPX | *CRITCHTON PINE PRODUCTS CO. | | | PWRC |
| 13500 | CPPX | *CRYSTAL PEARL PRODUCTS CO. | | | PWRC |
