| 8301 | CKCO | C.K. MARITIME | | | SCAC3 |
| 8302 | CKCP | CLARKE CORP | | | SCAC3 |
| 8303 | CKCQ | CROCKER, CHRISTOPHER SCOTT | | | SCAC4 |
| 8304 | CKCR | COOKS CRATING INC | | | SCAC3 |
| 8305 | CKCR | CK COURIER | | | SCAC4 |
| 8306 | CKCU | SOLSINO LTD | | HK | BIC |
| 8307 | CKCV | CHEROKEE COURIER SERVICES INC | | | SCAC3 |
| 8308 | CKCW | CHUCKS CARTAGE | | | SCAC3 |
| 8309 | CKCY | COOK COUNTY SCHOOL BUS INC | | | SCAC3 |
| 8310 | CKCY | CONCEPT TANKER CORPORATION | | | SCAC4 |
| 8311 | CKD | CKD Praha | | CZ | TRAFFIC |
| 8312 | CKD | Chemle Kelhelm GmbH | | DE | VKM |
| 8313 | CKDA | CLC TRUCKING | | | SCAC4 |
| 8314 | CKDC | COMERCIALIZADORA E IMPORTADORA DUCK | | | SCAC4 |
| 8315 | CKDG | CREEKSIDE TRANSPORTATION SERVICES I | | | SCAC4 |
| 8316 | CKDL | CLARK, DENNIS L INC | | | SCAC3 |
| 8317 | CKDN | CIA MAKEDONIA DE NAVEGACION S A | | | SCAC3 |
| 8318 | CKDN | CHRIS IRRIGATION INC | | | SCAC4 |
| 8319 | CKDO | CLARK, DYSON | | | SCAC4 |
| 8320 | CKDQ | CLARK, DARRELL | | | SCAC4 |
| 8321 | CKDR | CHEROKEE DISTRIBUTION SERVICES INC | | | SCAC3 |
| 8322 | CKDR | CHEROKEE DISTRIBUTION SERVICES INC | | | SCAC4 |
| 8323 | CKDS | CHUCKS DELIVERY SERVICE | | | SCAC3 |
| 8324 | CKDT | CROSS CREEK TRADING CO | | | SCAC4 |
| 8325 | CKDV | CLARK, DAVID L | | | SCAC3 |
| 8326 | CKDV | CLASSIC LIVESTOCK HAULING LTD | | | SCAC4 |
| 8327 | CKDW | CLARK, DONALD W INC | | | SCAC3 |
| 8328 | CKDY | CLARK, DYSON INC | | | SCAC3 |
| 8329 | CKE | Corporate Aviation Services, Inc. | Callsign: Checkmate, | USA | AVCODES |
| 8330 | CKE | Corporate Aviation Services | | | ICAO1 |
| 8331 | CKEB | CROCKETT BROS INC | | | SCAC3 |
| 8332 | CKEC | COOKES CRATING INC | | | SCAC3 |
| 8333 | CKEE | CROSS CREEK TRANSPORTATION INC | | | SCAC4 |
| 8334 | CKEG | CHESAPEAKE GRAIN CO INC | | | SCAC4 |
| 8335 | CKEH | CHEROKEE EXPRESS INC | | | SCAC3 |
| 8336 | CKEH | CONNELL, | | | SCAC4 |
| 8337 | CKEI | COMFORT KING ENERGY SERVICES | | | SCAC4 |
| 8338 | CKEJ | CRICKET EXPRESS | | | SCAC4 |
| 8339 | CKEL | COOK, ELMER TRUCKING INC | | | SCAC3 |
| 8340 | CKEM | COOKE MOVING & STORAGE | | | SCAC3 |
| 8341 | CKEM | CHICKS ELECTRIC MOTOR SERVICE | | | SCAC4 |
| 8342 | CKEN | CRANE, KEN TRUCKING INC | | | SCAC4 |
| 8343 | CKEO | CLARKE, ROD TRUCKING | | | SCAC3 |
| 8344 | CKEO | CLARKE, ROD TRUCKING INC | | | SCAC4 |
| 8345 | CKEP | COOKS EXPRESS INC | | | SCAC3 |
| 8346 | CKEQ | COOKE TRUCKING COMPANY INC | | | SCAC3 |
| 8347 | CKEQ | COOKE TRUCKING CO INC | | | SCAC4 |
| 8348 | CKER | CREST TANKERS INC, ST LOUIS MO | | | SCAC3 |
| 8349 | CKES | CHEROKEE SHIPPING INTERNATIONAL INC | | | SCAC3 |
| 8350 | CKET | CHECKMATE EXPEDITING & TRUCKING INC | | | SCAC3 |
| 8351 | CKEU | CELERITY TANK LOGISTICS (CHINA) LTD | | HK | BIC |
| 8352 | CKEV | CHEROKEE TRANSPORTATION SERVICES IN | | | SCAC3 |
| 8353 | CKEV | CHEROKEE TRANSPORTATION SERVICES IN | | | SCAC4 |
| 8354 | CKEY | CONKEY, JOHN & CO | | | SCAC3 |
| 8355 | CKFA | C-K FARMS INC | | | SCAC3 |
| 8356 | CKFC | CERNAK FUEL CORPORATION | | | SCAC4 |
| 8357 | CKFF | COOK FAMILY FARMS (EDEN) LTD | | | SCAC4 |
| 8358 | CKFI | CLICKFIL LLC | | | SCAC4 |
| 8359 | CKFL | CLARK FREIGHT LINES INC | | | SCAC3 |
| 8360 | CKFO | COOKES FUEL OIL CO INC | | | SCAC4 |
| 8361 | CKFQ | CROSS CREEK FARMS INC | | | SCAC4 |
| 8362 | CKFU | LIANYUNGANG C-K FERRY CO LTD | | PRC | BIC |
| 8363 | CKFU | LIANYUNGANG C-K FERRY CO LTD | | | SCAC4 |
| 8364 | CKGC | COOPER TRUCKING INC | | | SCAC3 |
| 8365 | CKGC | CENTRAL TRUCKING INC | | | SCAC4 |
| 8366 | CKGD | CELERITYTANK LOGISTICS (CHINA) LTD | | | SCAC4 |
| 8367 | CKGE | COOK, GEORGE TRUCKING INC | | | SCAC4 |
| 8368 | CKGG | COURTSIDE MARKETING GROUP | | | SCAC4 |
| 8369 | CKGI | CENTRAL TRUCKING INC | | | SCAC3 |
| 8370 | CKGI | CASIAS TRUCKING INC | | | SCAC4 |
| 8371 | CKGL | CROCKER GLOBAL | | | SCAC3 |
| 8372 | CKGM | C & K TRUCKING CO LLC | | | SCAC4 |
| 8373 | CKGN | C & I TRUCKING INC | | | SCAC4 |
| 8374 | CKGO | CLARK GAS & OIL CO INC | | | SCAC4 |
| 8375 | CKGP | CROSS TRUCKING & STORAGE | | | SCAC4 |
| 8376 | CKGQ | CLINKSCALE GARAGE INC | | | SCAC4 |
| 8377 | CKGR | CK LOGISTICS INCORPORATED | | | SCAC4 |
| 8378 | CKGS | CARPENTER, K G & SONS INC | | | SCAC3 |
| 8379 | CKGS | CAMPBELL TRUCKING LLC | | | SCAC4 |
| 8380 | CKGT | CLARK LOGISTICS SOLUTIONS LLC | | | SCAC4 |
| 8381 | CKGV | CASTELL TRUCKING GROUP LLC | | | SCAC4 |
| 8382 | CKGY | CARMICHAEL TRUCKING INC | | | SCAC4 |
| 8383 | CKHB | CLARK HUTTERIAN BRETHREN INC | | | SCAC4 |
| 8384 | CKHC | CROOKER, HARRY C AND SONS INC | | | SCAC4 |
| 8385 | CKHD | COSSET BULK SHIPPING LTD | | | SCAC4 |
| 8386 | CKHK | COOK, H E & SONS TRUCKING | | | SCAC3 |
| 8387 | CKHM | CERTEK HEAT MACHINE USA LLC | | | SCAC4 |
| 8388 | CKHN | CLOAK HILL COMMUNICATION | | | SCAC4 |
| 8389 | CKHP | CHUCKS TRANSPORTS INC | | | SCAC4 |
| 8390 | CKHS | CLARKS HOTSHOT | | | SCAC3 |
| 8391 | CKHT | CARLISLE, KENT TRUCKING | | | SCAC3 |
| 8392 | CKHU | CLEANCOR ENERGY SOLUTIONS LLC | | USA | BIC |
| 8393 | CKHU | INTERMEDIATE LOGISTIC SERVICES LIMI | | | SCAC4 |
| 8394 | CKHY | CLARK COMPANY HAY INC | | | SCAC3 |
| 8395 | CKIA | CORK, IVAN | | | SCAC4 |
| 8396 | CKIB | COOK INLET TUG & BARGE CO INC | | | SCAC3 |
| 8397 | CKIB | COOK INLET TUG & BARGE CO INC | | | SCAC4 |
| 8398 | CKIC | CARTER TRUCKING COMPANY | | | SCAC3 |
| 8399 | CKIC | CROUCH TRUCKING INC | | | SCAC4 |
| 8400 | CKID | CLARKE INTERMODEL | | | SCAC4 |
