| 7401 | CIEL | CONTINENTAL LIMOUSINE SERVICE | | | SCAC3 |
| 7402 | CIEL | CRUCES INTERNACIONALES ELIAND | | | SCAC4 |
| 7403 | CIEN | CLINE ENERGY INC | | | SCAC4 |
| 7404 | CIEO | CITY EXPRESS INC | | | SCAC3 |
| 7405 | CIEP | CITY EXPRESS | | | SCAC3 |
| 7406 | CIEP | CITY EXPRESS | | | SCAC4 |
| 7407 | CIEQ | CARLISLE CARRIER CORP | | | SCAC3 |
| 7408 | CIEQ | CARLISLE CARRIER CORP | | | SCAC4 |
| 7409 | CIES | CITRUS EXPRESS INC | | | SCAC3 |
| 7410 | CIES | CITRUS EXPRESS INC | | | SCAC4 |
| 7411 | CIET | CIEUTAT PRODUCE CO | | | SCAC3 |
| 7412 | CIEU | CEMINLOG | | F | BIC |
| 7413 | CIEU | CORAS IOMPAIR EIREANN | | | SCAC3 |
| 7414 | CIEU | IARNROD EIREANN | | | SCAC4 |
| 7415 | CIEV | CROSS CARRIERS INC | | | SCAC3 |
| 7416 | CIEW | CONTAINER EXPRESS | | | SCAC3 |
| 7417 | CIEW | CONTAINER EXPRESS | | | SCAC4 |
| 7418 | CIEY | CHEMSTREAM INC | | | SCAC4 |
| 7419 | CIF | Caribbean Flights | Callsign: Carflights, | YV | AVCODES |
| 7420 | CIFB | CHIEF TRANSPORTATION CO | | | SCAC3 |
| 7421 | CIFC | CONCORDIA INTERNATIONAL FORWARDING | | | SCAC3 |
| 7422 | CIFC | CONCORDIA INTERNATIONAL FORWARDING | | | SCAC4 |
| 7423 | CIFE | CINE-FILM EXPRESS | | | SCAC3 |
| 7424 | CIFF | COBAL INTERNATIONAL | | | SCAC3 |
| 7425 | CIFG | CITATION FORWARDING INC | | | SCAC3 |
| 7426 | CIFH | CIRCLE FREIGHT SERVICE INC | | | SCAC3 |
| 7427 | CIFI | COMPASS INTERNATIONAL FORWARDING IN | | | SCAC3 |
| 7428 | CIFK | CARRIE INTERNATIONAL FREIGHT SERVIC | | | SCAC4 |
| 7429 | CIFM | CIF MESSENGER INC | | | SCAC3 |
| 7430 | CIFM | C I F METAL LTEE | | | SCAC4 |
| 7431 | CIFN | CITY FURNITURE | | | SCAC4 |
| 7432 | CIFO | CRUCES INTERNACIONALES FRONTERIZOS | | | SCAC4 |
| 7433 | CIFQ | CITY FUEL & TIRE COMPANY | | | SCAC3 |
| 7434 | CIFR | CHINA INTERNATIONAL FREIGHT (USA) L | | | SCAC4 |
| 7435 | CIFS | CIF COMPOSITES INC | | | SCAC4 |
| 7436 | CIFT | CHIEFS TRUCKING CO | | | SCAC3 |
| 7437 | CIFT | CHIEFS TRUCKING CO | | | SCAC4 |
| 7438 | CIFU | COMPAGNIE FRANCAISE POUR LE DEVELOP | | | SCAC3 |
| 7439 | CIFU | XIAMEN CENTRANS OCEAN SHIPPING LOGI | | | SCAC4 |
| 7440 | CIFV | CARGO INTERNATIONAL FORWARDERS & NV | | | SCAC4 |
| 7441 | CIFW | CARMITAN FORWARDING CORPORATION | | | SCAC3 |
| 7442 | CIFX | The City Ice and Fuel Co. | 7/1932-4/1938; 1/1941-1/1943 (not listed) | | NAKINA |
| 7443 | CIFX | The City Ice and Fuel Co. | Apr-38 | | NRHS |
| 7444 | CIFX | CITY ICE & FUEL CO. | | | PWRC |
| 7445 | CIFY | CAMPI INTERMODAL FREIGHTWAY INC | | | SCAC3 |
| 7446 | CIG | Air Company Sirius-Aero Ltd | IATA: SA, Callsign: Sirius Aero, | RUS | AVCODES |
| 7447 | CIG | Sirius-Aero | | | ICAO1 |
| 7448 | CIGA | CHAT OF MICHIGAN INC | | | SCAC4 |
| 7449 | CIGB | CELEBRITY INTERNATIONAL MOVERS S A | | | SCAC4 |
| 7450 | CIGC | COLLINGS MOVING & STORAGE, INC | | | SCAC3 |
| 7451 | CIGD | CARDINAL INTL GROOVING & GRINDING L | | | SCAC4 |
| 7452 | CIGF | COSCO INTERNATIONAL AIR FREIGHT CO | | | SCAC4 |
| 7453 | CIGI | CARDEN INDUSTRIAL GROUP INC | | | SCAC3 |
| 7454 | CIGL | CARRIAGE LIMOUSINE INC | | | SCAC3 |
| 7455 | CIGN | CASINGS INC | | | SCAC3 |
| 7456 | CIGO | CITY WIDE TRANSPORT INC | | | SCAC3 |
| 7457 | CIGP | CHAMPION LOGISTICS GROUP INC | | | SCAC4 |
| 7458 | CIGQ | CITY OF GREENVILLE | | | SCAC3 |
| 7459 | CIGR | CRAIGCO TRANSPORT | | | SCAC4 |
| 7460 | CIGS | CARRIAGE SHED | | | SCAC3 |
| 7461 | CIGT | CIRCLE G TRANSPORTATION | | | SCAC3 |
| 7462 | CIGU | EDF | | F | BIC |
| 7463 | CIGV | CLEARPOINT INTERNATIONAL GROUP LLC | | | SCAC4 |
| 7464 | CIGW | COMMONTRANS INC | | | SCAC4 |
| 7465 | CIGX | The CIT Group/Capital Finance, Inc. | added 7/2008 | | NAKINA |
| 7466 | CIGX | THE CIT GROUP/CAPITAL FINANCE, INC. | | | PWRC |
| 7467 | CIGX | CIT GROUP/CAPITAL FINANCE INC, THE | | | SCAC4 |
| 7468 | CIGY | CHARTED IMAGERY | | | SCAC4 |
| 7469 | CIHC | CIRCLE H COAL COMPANY | | | SCAC3 |
| 7470 | CIHD | CENTER LINE HOLDINGS LTD | | | SCAC4 |
| 7471 | CIHE | CARMICHAEL TRUCKING | | | SCAC3 |
| 7472 | CIHG | CHEMICAL LOGISTICS INC | | | SCAC4 |
| 7473 | CIHN | CONTICHEM INC NEW YORK | | | SCAC3 |
| 7474 | CIHO | CHILTON OIL CO INC | | | SCAC4 |
| 7475 | CIHR | CHEETAH TRANSPORTATION LLC (N/K/A G | | | SCAC4 |
| 7476 | CIHS | CLASSIC HELICOPTERS LTD | | | SCAC4 |
| 7477 | CIHT | CLASSIC COACH & TOURS | | | SCAC3 |
| 7478 | CIHU | CONTAINERS INTERNATIONAL LTD | | | SCAC3 |
| 7479 | CII | CityFly | Callsign: CityFly, | I | AVCODES |
| 7480 | CII | Cook Islands International | | COK | AVCODES |
| 7481 | CII | Cityfly | | | ICAO1 |
| 7482 | CIIA | CHRISTIAN CARTAGE CO INC | | | SCAC3 |
| 7483 | CIIA | CASCO INDUSTRIES INC | | | SCAC4 |
| 7484 | CIIC | CANNON INDUSTRIES INC | | | SCAC3 |
| 7485 | CIID | COLONIAL MARINE INDUSTRIES INC. | | | SCAC3 |
| 7486 | CIID | COLONIAL MARINE INDUSTRIES INC | | | SCAC4 |
| 7487 | CIIE | CLASS COURIER INC | | | SCAC3 |
| 7488 | CIIE | CARLISLE INVESTMENTS INC | | | SCAC4 |
| 7489 | CIIF | COPANEX INTERNATIONAL INC | | | SCAC4 |
| 7490 | CIIG | C&M SHIPPING, INC | | | SCAC3 |
| 7491 | CIIH | CANATAL INDUSTRIES INC | | | SCAC4 |
| 7492 | CIII | COLONIAL CARRIER INC | | | SCAC3 |
| 7493 | CIII | COLONIAL CARRIER INC | | | SCAC4 |
| 7494 | CIIK | CLAYTON INTERNATIONAL INC | | | SCAC4 |
| 7495 | CIIL | CIRCLE INTERNATIONAL INC | | | SCAC4 |
| 7496 | CIIM | CRITERION MILLS INC | | | SCAC3 |
| 7497 | CIIM | CIMA TRANSPORTATION INC | | | SCAC4 |
| 7498 | CIIN | CII OF NEW JERSEY INC | | | SCAC3 |
| 7499 | CIIN | CLIC INTERNATIONAL INC | | | SCAC4 |
| 7500 | CIIQ | COASTLINE INTERMODAL INC | | | SCAC4 |
