| 2201 | ACHV | ATLANTIC COACH INC | | | SCAC3 |
| 2202 | ACHV | AUTOFLETES CHIHUAHUA SA DE CV | | | SCAC4 |
| 2203 | ACHW | AHC TRUCKING CO | | | SCAC4 |
| 2204 | ACHX | American Cyanamid Co. | 1/1994 (not listed); added 10/1996; eliminated 4/1997; 7/2000 (not listed) | | NAKINA |
| 2205 | ACHX | USS Agri-Chemicals, Inc., Division of United States Steel Corp. | added 4/1970; 4/1970-1/1975; eliminated 4/1977; 1/1980 | | NAKINA |
| 2206 | ACHX | USS Agri-Chemicals, Inc., Subsidiary of United States Steel Corp. | eliminated 4/1970 | | NAKINA |
| 2207 | ACHX | USS Agri-Chemicals, Inc. | added 10/1968 | | NAKINA |
| 2208 | ACHX | Armour and Co. | 7/1965-10/1966 | | NAKINA |
| 2209 | ACHX | Armour Car Lines | eliminated 10/1968 | | NAKINA |
| 2210 | ACHX | Atlas Chemical Co. | 1/1952; 7/1954; eliminated 7/1956 | | NAKINA |
| 2211 | ACHX | Allis-Chalmers Manufacturing Co. | 7/1930-4/1938 | | NAKINA |
| 2212 | ACHX | Allis-Chalmers Manufacturing Co. | Apr-38 | | NRHS |
| 2213 | ACHX | Atlas Chemical Co. | 1/52; eliminated 7/56 | | NRHS |
| 2214 | ACHX | Armour and Co. | 7/65-10/66 | | NRHS |
| 2215 | ACHX | Armour Car Lines | eliminated 10/68 | | NRHS |
| 2216 | ACHX | USS Agri-Chemicals, Inc. | added 10/68 | | NRHS |
| 2217 | ACHX | USS Agri-Chemicals, Inc., Subsidiary of United States Steel Corp. | eliminated 4/70 | | NRHS |
| 2218 | ACHX | USS Agri-Chemicals, Inc., Division of United States Steel Corp. | added 4/70; 4/70-1/80 | | NRHS |
| 2219 | ACHX | American Cyanamid Co. | 1/94; added 10/96; eliminated 4/97; 7/2000 | | NRHS |
| 2220 | ACHX | *ALLIS-CHALMERS MANUFACTURING CO. | | | PWRC |
| 2221 | ACHX | *ATLAS CHEMICAL CO. | | | PWRC |
| 2222 | ACHX | *ARMOUR CAR LINES | | | PWRC |
| 2223 | ACHX | *USS AGRI-CHEMICALS DIVI. UNITED STATES STEEL CORP. | | | PWRC |
| 2224 | ACHX | *AMERICAN CYANAMID CO. | | | PWRC |
| 2225 | ACHX | ARMOUR AND CO | | | SCAC3 |
| 2226 | ACHY | ATCHLEY TRANSPORT INC | | | SCAC3 |
| 2227 | ACI | Air Caledonie International | IATA: SB, Callsign: Air Calin, IATA Prefix: 063, ICAO designator changed from RKL | NC | AVCODES |
| 2228 | ACI | Air Cortez | Callsign: Air Cortez, | USA | AVCODES |
| 2229 | ACI | Air Caledonie International | IATA: SB | | ICAO1 |
| 2230 | ACI | Air Caledonie International | Based in New-Caledonia | F | TRAFFIC |
| 2231 | ACIB | AMERIFREIGHT INC | | | SCAC3 |
| 2232 | ACIB | ACI | | | SCAC4 |
| 2233 | ACID | ACTION DELIVERY SERVICE INC | | | SCAC3 |
| 2234 | ACIE | ACTION EXPRESS INC | | | SCAC3 |
| 2235 | ACIE | A & C IMPORT EXPORT SERVICES INC | | | SCAC4 |
| 2236 | ACIF | ALLIED CONTINENTAL FORWARDING INC | | | SCAC3 |
| 2237 | ACIG | A C EXPRESS INC | | | SCAC3 |
| 2238 | ACIH | ACI TRANSPORT | | | SCAC4 |
| 2239 | ACIJ | ACE INDUSTRIES INC | | | SCAC3 |
| 2240 | ACIK | AMERICARRIER, INC | | | SCAC3 |
| 2241 | ACIK | AMERICARRIER INC | | | SCAC4 |
| 2242 | ACIM | ALL CITY MOVING & STORAGE | | | SCAC3 |
| 2243 | ACIM | ACOSTA IMPORTS | | | SCAC4 |
| 2244 | ACIN | ACTION TRANSPORT | | | SCAC3 |
| 2245 | ACIO | ALL CITY LEASING & WAREHOUSING INC | | | SCAC3 |
| 2246 | ACIO | ALL CITY LEASING & WAREHOUSING INC | | | SCAC4 |
| 2247 | ACIP | ACE MOVERS INC | | | SCAC3 |
| 2248 | ACIP | ALTA-DENA CERTIFIED DAIRY LLC | | | SCAC4 |
| 2249 | ACIQ | A C I SERVICE INC | | | SCAC3 |
| 2250 | ACIR | ACTION CARRIER, INC. | | | SCAC3 |
| 2251 | ACIR | ACTION CARRIER INC | | | SCAC4 |
| 2252 | ACIS | Algoma Central Ry., Inc. | added 10/1995-7/2005 | | NAKINA |
| 2253 | ACIS | Algoma Central R.R., Inc. | added 4/1995 | | NAKINA |
| 2254 | ACIS | Algoma Central Ry. | added 4/1974; 1/1975-1/1994; eliminated 4/1995 | | NAKINA |
| 2255 | ACIS | Algoma Central Ry. | added 4/74; 1/75-1/94; eliminated 4/95 | | NRHS |
| 2256 | ACIS | Algoma Central R.R., Inc. | added 4/95 | | NRHS |
| 2257 | ACIS | Algoma Central Ry., Inc. | added 10/95-7/2000 | | NRHS |
| 2258 | ACIS | ALGOMA CENTRAL RWY. (CANADIAN NATIONAL RWY.) | | | PWRC |
| 2259 | ACIS | Algoma Central Railway | | | RSRV |
| 2260 | ACIT | AIR COURIERS INTERNATIONAL INC | | | SCAC3 |
| 2261 | ACIT | ABC CONSOLIDATORS INTERNATIONAL INC | | | SCAC4 |
| 2262 | ACIT | Azienda Consorziale Interprovinciale | | I | TRAFFIC |
| 2263 | ACITY | Atlantic City Transportation | | USA | TRAFFIC |
| 2264 | ACIU | Allstate Container | | | RSRV |
| 2265 | ACIU | ALLSTATE CONTAINER INC | | | SCAC4 |
| 2266 | ACIW | A C I LTD | | | SCAC3 |
| 2267 | ACIX | Great Lakes Chemical Corp. | added 1/1998; 7/2000-7/2005; eliminated 10/2006 | | NAKINA |
| 2268 | ACIX | Arkansas Chemicals, Inc. | added 4/1961; 4/1961-1/1994; eliminated 1/1998 | | NAKINA |
| 2269 | ACIX | Atlantic Creosoting Co. | 7/1937-4/1938 (not listed) | | NAKINA |
| 2270 | ACIX | Arkansas Chemicals, Inc. | added 4/61; 4/61-1/94; eliminated 1/98 | | NRHS |
| 2271 | ACIX | Great Lakes Chemical Corp. | added 1/98; 7/2000 | | NRHS |
| 2272 | ACIX | GREAT LAKES CHEMICAL CORP.[ATLANTIC CREOSOTING; ARKANSAS CHEMICALS,INC.] | | | PWRC |
| 2273 | ACIX | Arkansas Chemicals (Great Lakes Chemical Corporation) | | | RSRV |
| 2274 | ACIX | ARKANSAS CHEMICALS INC | | | SCAC3 |
| 2275 | ACIX | GREAT LAKES CHEMICAL CORP | | | SCAC4 |
| 2276 | ACJ | Avicon Limited | Callsign: Avicharter, | EAK | AVCODES |
| 2277 | ACJ | Air Corporate | Callsign: Fly Business, | F | AVCODES |
| 2278 | ACJ | AC Aviation Co., Ltd | Callsign: Sinojet, | T | AVCODES |
| 2279 | ACJA | ABLE COLD STORAGE | | | SCAC4 |
| 2280 | ACJB | ARIEL CARGO EXPORT INC | | | SCAC4 |
| 2281 | ACJC | A COLUMBIA CONNECTION LIMOUSINES IN | | | SCAC3 |
| 2282 | ACJC | AUTO CRAFT TOOL & DIE CO INC | | | SCAC4 |
| 2283 | ACJD | ALLEY CASSETTY TRUCKING | | | SCAC4 |
| 2284 | ACJE | ALPINE COMMERCIAL ENTERPRISES INC, | | | SCAC3 |
| 2285 | ACJF | ATLANTIC COAST FIBERS | | | SCAC3 |
| 2286 | ACJF | AIR CONTAINER TRANSFER INC | | | SCAC4 |
| 2287 | ACJG | ATRIUM COMPANIES INC | | | SCAC4 |
| 2288 | ACJH | AAT CARRIERS INC | | | SCAC4 |
| 2289 | ACJI | A COMPANY TRUCKING INC | | | SCAC4 |
| 2290 | ACJL | AMERICOACH TOURS LTD | | | SCAC3 |
| 2291 | ACJM | ATLANTIC CONBULK MARITIME CORP. | | | SCAC3 |
| 2292 | ACJM | ATLANTIC CONBULK MARITIME CORP. | | | SCAC4 |
| 2293 | ACJN | AIR CARE INC | | | SCAC3 |
| 2294 | ACJN | ACR TRUCKING INC | | | SCAC4 |
| 2295 | ACJP | ATLANTIC COAST TRUCKING LLC | | | SCAC4 |
| 2296 | ACJQ | ABSOLUTE CARGO INC | | | SCAC4 |
| 2297 | ACJR | Ashtabula Carson Jefferson R.R. Co., Inc. | added 10/1987; 1/1994-7/2005 | | NAKINA |
| 2298 | ACJR | Ashtabula Carson Jefferson R.R. Co., Inc. | added 10/87; 1/94-7/2000 | | NRHS |
| 2299 | ACJR | ASHTABULA CARSON JEFFERSON RAILROAD | | | PWRC |
| 2300 | ACJR | ASTABULA CARSON JEFFERSON RAILROAD CO. | | | PWRC |
