| 1 | ALA | Albion Aviation | Callsign: Albion, | GB | AVCODES |
| 2 | ALA | ALABAMA & GULF COAST RAILWAY | | | PWRC |
| 3 | ALAA | ALAMO AMBULANCE SERVICE INC | | | SCAC3 |
| 4 | ALAA | ALAMO AMBULANCE SERVICE INC | | | SCAC4 |
| 5 | ALAB | Alabama R.R. Co. | added 7/1993; 1/1994-7/2005 | | NAKINA |
| 6 | ALAB | Alabama R.R. Co. | added 7/93; 1/94-7/2000 | | NRHS |
| 7 | ALAB | ALABAMA RAILROAD COMPANY, INC. | | | PWRC |
| 8 | ALAB | Alabama Railroad | | | RSRV |
| 9 | ALAB | ALABAMA RAILROAD CO INC | | | SCAC3 |
| 10 | ALAB | ALABAMA RAILROAD CO INC | | | SCAC4 |
| 11 | ALAB | Alabama Railroad | | USA | TRAFFIC |
| 12 | ALAC | ALASKA TRANSPORT | | | SCAC3 |
| 13 | ALAD | ALADIN VAN LINES, INCORPORATED | | | SCAC3 |
| 14 | ALAD | ALANIS RIVERA, JOSUE DAVID | | | SCAC4 |
| 15 | ALAF | ALABAMA FREIGHT INC | | | SCAC3 |
| 16 | ALAH | ALLAIRE TRANSPORT | | | SCAC3 |
| 17 | ALAI | ALL AMERICAN CARTAGE | | | SCAC3 |
| 18 | ALAJ | ALADDIN INC | | | SCAC3 |
| 19 | ALAK | ALASKA ORIENT VAN SERVICE, INC | | | SCAC3 |
| 20 | ALAL | ATLANTA AIR TRANSPORTATION INC | | | SCAC3 |
| 21 | ALAL | ATLANTA AIR TRANSPORTATION INC | | | SCAC4 |
| 22 | ALAM | ALAMO BUS LINES, INC | | | SCAC3 |
| 23 | ALAM | ALAMPI, ANTHONY P | | | SCAC4 |
| 24 | ALAN | ALAN MOTOR LINES INC | | | SCAC3 |
| 25 | ALAND | ARBOTEC GmbH | | DE | VKM |
| 26 | ALAP | AIR LIQUIDE AMERICA LP | | | SCAC4 |
| 27 | ALAQ | ALL AMERICAN WAREHOUSE | | | SCAC3 |
| 28 | ALAQ | ARROW LINE ACQUISITION LLC | | | SCAC4 |
| 29 | ALAR | ALLARD EXCAVATING | | | SCAC3 |
| 30 | ALAS | ALASKA TERMINALS INC | | | SCAC3 |
| 31 | ALAS | ALASKA TERMINALS INC | | | SCAC4 |
| 32 | ALAT | ATLANTIS EXPRESS INC | | | SCAC3 |
| 33 | ALAT | ALASAN TRUCKING | | | SCAC4 |
| 34 | ALAU | JSC EKOPET | | RUS | BIC |
| 35 | ALAU | ALUMINUM COMPANY OF AMERICA | | | SCAC3 |
| 36 | ALAU | LIMITED LIABILITY COMPANY EKOPET | | | SCAC4 |
| 37 | ALAX | Equistar Chemicals, LP | added 4/1998; 7/2000-7/2005 | | NAKINA |
| 38 | ALAX | Lyondell Petrochemical Co. | added 4/1996; eliminated 4/1998 | | NAKINA |
| 39 | ALAX | Occidental Chemical Corp. | added 1/1992; 1/1994; eliminated 10/1995 | | NAKINA |
| 40 | ALAX | Occidental Chemical Corp., Alathon Polymers Division | added 7/1990; eliminated 1/1992 | | NAKINA |
| 41 | ALAX | Oxy Petrochemicals Inc. | added 1/1990; eliminated 7/1990 | | NAKINA |
| 42 | ALAX | Cain Chemical Inc. | added 4/1988; eliminated 1/1990 | | NAKINA |
| 43 | ALAX | Alabama Metalurgical Corp. | added 7/1974; 1/1975-1/1980; eliminated 1/1982 | | NAKINA |
| 44 | ALAX | Union Oil Co. of California | added 1/1960; 4/1961; eliminated 7/1962 | | NAKINA |
| 45 | ALAX | Alaska Asphalt Co. | added 4/1959; eliminated 7/1959 | | NAKINA |
| 46 | ALAX | Alaska Asphalt Co. | eliminated 7/59 | | NRHS |
| 47 | ALAX | Union Oil Co. of California | added 1/60; 4/61 | | NRHS |
| 48 | ALAX | Alabama Metalurgical Corp. | added 7/74; 1/75-1/80; eliminated 1/82 | | NRHS |
| 49 | ALAX | Cain Chemical Inc. | added 4/88; eliminated 1/90 | | NRHS |
| 50 | ALAX | Oxy Petrochemicals Inc. | added 1/90; eliminated 7/90 | | NRHS |
| 51 | ALAX | Occidental Chemical Corp., Alathon Polymers Division | added 7/90; eliminated 1/92 | | NRHS |
| 52 | ALAX | Occidental Chemical Corp. | added 1/92; 1/94; eliminated 10/95 | | NRHS |
| 53 | ALAX | Lyondell Petrochemical Co. | added 4/96; eliminated 4/98 | | NRHS |
| 54 | ALAX | Equistar Chemicals, LP | added 4/98; 7/2000 | | NRHS |
| 55 | ALAX | *ALASKA ASPHALT CO. | | | PWRC |
| 56 | ALAX | *UNION OIL COMPANY OF CALIFORNIA | | | PWRC |
| 57 | ALAX | *ALABAMA METALLURGICAL CORP. | | | PWRC |
| 58 | ALAX | *CAIN CHEMICAL INC. | | | PWRC |
| 59 | ALAX | +EQUISTAR CHEMICALS [OCCIDENTAL CHEMICAL CORP., ALATHON POLYMERS DIV.; OXY PETROCHEMICALS; LYONDELL PETROCHEMICAL]) | | | PWRC |
| 60 | ALAX | Alaska Asphalt (Equistar Chemicals) | | | RSRV |
| 61 | ALAX | EQUISTAR CHEMICALS LP | | | SCAC4 |
| 62 | ALAY | A L A DELIVERY CORP | | | SCAC3 |
| 63 | ALAY | ALACAR LOGISTICS LLC | | | SCAC4 |
