| 12001 | COEH | CONECUH VALLEY RAILWAY LLC | | | SCAC4 |
| 12002 | COEI | COAST EXPRESS INC | | | SCAC3 |
| 12003 | COEI | C O ENTERPRISES INC | | | SCAC4 |
| 12004 | COEJ | CONTINENTAL LAND TOURS INC | | | SCAC3 |
| 12005 | COEK | COLEMANS TRUCKING | | | SCAC3 |
| 12006 | COEM | COLEMAN TRUCKING CO | | | SCAC3 |
| 12007 | COEM | CRONE GEOPHYSICS & EXPLORATION LTD | | | SCAC4 |
| 12008 | COEN | COLONIAL EXPRESS INC | | | SCAC3 |
| 12009 | COEP | COLORADO MOTOR EXPRESS | | | SCAC3 |
| 12010 | COEP | COLORADO MOTOR EXPRESS | | | SCAC4 |
| 12011 | COEQ | COMMERCIAL MERCHANDISE | | | SCAC3 |
| 12012 | COEQ | COMMAND EQUIPMENT LTD | | | SCAC4 |
| 12013 | COER | Crab Orchard & Egyptian R.R. | added 1/1999; 7/2000; eliminated 4/2004; 7/2005 | | NAKINA |
| 12014 | COER | American Rail Heritage, Ltd. d/b/a Crab Orchard & Egyptian R.R. | 1/1994; eliminated 1/1999 | | NAKINA |
| 12015 | COER | Crab Orchard & Egyptian R.R. | 1/1980 | | NAKINA |
| 12016 | COER | American Rail Heritage, Ltd. d/b/a Crab Orchard & Egyptian R.R. | added 1/1978; added 4/1979 | | NAKINA |
| 12017 | COER | American Rail Heritage, Ltd. d/b/a Crab Orchard & Egyptian R.R. | added 1/78; added 4/79 | | NRHS |
| 12018 | COER | Crab Orchard & Egyptian R.R. | Jan-80 | | NRHS |
| 12019 | COER | American Rail Heritage, Ltd. d/b/a Crab Orchard & Egyptian R.R. | 1/94; eliminated 1/99 | | NRHS |
| 12020 | COER | Crab Orchard & Egyptian R.R. | added 1/99; 7/2000 | | NRHS |
| 12021 | COER | CRAB ORCHARD & EGYPTIAN RAILROAD | | | PWRC |
| 12022 | COER | Crab Orchard and Egyptian Railroad | | | RSRV |
| 12023 | COER | CRAB ORCHARD & EGYPTIAN RAILROAD | | | SCAC3 |
| 12024 | COER | Crab Orchard & Egyptian R.R. | | USA | TRAFFIC |
| 12025 | COES | COTTER EXECUTIVE SEDAN | | | SCAC3 |
| 12026 | COET | COVEY TRANSPORT INC | | | SCAC4 |
| 12027 | COEU | CONOCO CHEMICALS EUROPE | | | SCAC3 |
| 12028 | COEV | CONSOLIDATED TRANSPORT SERVICES. | | | SCAC3 |
| 12029 | COEV | CONSOLIDATED TRANSPORT SERVICES INC | | | SCAC4 |
| 12030 | COEW | CHATHAM-KENT ORGANIC EPI-CENTRE INC | | | SCAC4 |
| 12031 | COEY | COUEY TRUCKING COMPANY | | | SCAC3 |
| 12032 | COEZ | *CRAB ORCHARD & EGYPTIAN RAILROAD | | | PWRC |
| 12033 | COEZ | *COAST ENGINES | | | PWRC |
| 12034 | COEZ | Crab Orchard and Egyptian Railroad | | | RSRV |
| 12035 | COEZ | CRAB ORCHARD & EGYPTIAN RAILROAD | | | SCAC4 |
| 12036 | COF | Confort Air, Inc. | Callsign: Confort, | CDN | AVCODES |
| 12037 | COF | Comfort Air GmbH & Co. KG. | Callsign: Comfort Air, | D | AVCODES |
| 12038 | COF | Confort Air | | | ICAO1 |
| 12039 | COFA | COLA FUEL CORP | | | SCAC4 |
| 12040 | COFB | COLLINS FREIGHT BROKERS INC | | | SCAC4 |
| 12041 | COFC | COOL LOGISTICS | | | SCAC4 |
| 12042 | COFD | CONSOLIDATED FRWDS CO | | | PWRC |
| 12043 | COFD | COASTAL TRANSPORT INC | | | SCAC3 |
| 12044 | COFD | COASTAL TRANSPORT LOGISTICS LLC | | | SCAC4 |
| 12045 | COFE | CENTRAL OKLAHOMA FREIGHT LINES, INC | | | SCAC3 |
| 12046 | COFE | CHAMPION AUTOSPORT TRANSPORT INC | | | SCAC4 |
| 12047 | COFF | COFFEE TRANSPORT INC | | | SCAC4 |
| 12048 | COFG | CENTRAL OF GEORGIA | | | PWRC |
| 12049 | COFG | CONTINENTAL FREIGHT FORWARDING INC | | | SCAC4 |
| 12050 | COFI | CIOFFI TRUCKING CO INC | | | SCAC3 |
| 12051 | COFI | CIOFFI TRUCKING | | | SCAC4 |
| 12052 | COFJ | CONTINENTAL FRONTIERS INC | | | SCAC3 |
| 12053 | COFL | COMMERCIAL FRT LINES INC | | | PWRC |
| 12054 | COFL | CONWAY FREIGHT LINES INC | | | SCAC3 |
| 12055 | COFM | COFFMAN, RAYMOND E | | | SCAC3 |
| 12056 | COFN | CENTRAL OHIO FARMERS COOP INC | | | SCAC4 |
| 12057 | COFO | COMET CARTAGE INC | | | SCAC3 |
| 12058 | COFP | COOPER AIR FREIGHT SERVICE, INC | | | SCAC3 |
| 12059 | COFP | COOPER AIR FREIGHT SERVICE INC | | | SCAC4 |
| 12060 | COFQ | CO FREIGHT INC | | | SCAC4 |
| 12061 | COFR | CENTURY-O K FREIGHTWAYS INC | | | SCAC3 |
| 12062 | COFS | COFSKYS EXPRESS | | | SCAC3 |
| 12063 | COFS | COMPLETE FREIGHT SOLUTIONS INC | | | SCAC4 |
| 12064 | COFV | CO F | | | SCAC4 |
| 12065 | COFW | COFFEYS WRECKER SERVICE | | | SCAC3 |
| 12066 | COFW | CAROLINA SPECIALIZED CO LLC | | | SCAC4 |
| 12067 | COFY | COFFEYS TRUCKING | | | SCAC4 |
| 12068 | COG | Compania Aerea de Guinea Ecuatorial (COAGE) | Callsign: Coage, | GQ | AVCODES |
| 12069 | COG | CONTINENTAL GRAIN | | | PWRC |
| 12070 | COG | Kolejowe Zakłady Nawierzchniowe COGIFER POLSKA Sp. z o.o. | | PL | VKM |
| 12071 | COGA | COONEY TRANSIT INC | | | SCAC4 |
| 12072 | COGB | CARRIER ONE GLOBAL LOGISTICS INC. | | | SCAC4 |
| 12073 | COGC | CORRUGATED CARRIEERS INC | | | SCAC3 |
| 12074 | COGC | CALPORT LOGISTICS | | | SCAC4 |
| 12075 | COGE | COLARULLO, GEORGE C JR | | | SCAC3 |
| 12076 | COGG | COGGINS HAULING | | | SCAC3 |
| 12077 | COGG | COLLEGE PARK GAS & GO | | | SCAC4 |
| 12078 | COGH | COUGHLIN TRANSPORTATION INC | | | SCAC3 |
| 12079 | COGH | COGDILL, CHRIS | | | SCAC4 |
| 12080 | COGI | COMPUTER TRANSPORT OF GEORGIA, INC. | | | SCAC3 |
| 12081 | COGI | COUSINS GROUP INC | | | SCAC4 |
| 12082 | COGI | Cogifer | | F | TRAFFIC |
| 12083 | COGI | COGIVEN s.r.l. | | IT | VKM |
| 12084 | COGK | COSTA OIL COMPANY | | | SCAC4 |
| 12085 | COGL | COGLE TRUCKING INC | | | SCAC3 |
| 12086 | COGM | COMPAGNIE GENERALE MARITIME | | | PWRC |
| 12087 | COGN | COGGINS, LESTER TRUCKING INC | | | SCAC3 |
| 12088 | COGP | COLGATE PAPER STOCK | | | SCAC3 |
| 12089 | COGQ | COTTING CARRIERS | | | SCAC3 |
| 12090 | COGR | CORNELIUS, J A GRAIN ELEVATOR INC | | | SCAC3 |
| 12091 | COGS | COADYS GARAGE & TOWING SERVICE | | | SCAC3 |
| 12092 | COGS | COASTLINE LOGISTICS LLC | | | SCAC4 |
| 12093 | COGT | CHATTANOOGA TOURS INC | | | SCAC3 |
| 12094 | COGU | ORANO NPS | | F | BIC |
| 12095 | COGU | COGEMA | | | SCAC3 |
| 12096 | COGU | COGEMA LOGISTICS | | | SCAC4 |
| 12097 | COGW | CONTI-OSG ASSOCIATED (III) C.V. | | | SCAC3 |
| 12098 | COGX | Rail Connection, Inc. | added 4/2007 | | NAKINA |
| 12099 | COGX | RAIL CONNECTION, INC. | | | PWRC |
| 12100 | COGX | RAIL CONNECTIONS INC | | | SCAC4 |
