| 1 | ALL | Aliserio S.p.A. | Callsign: Aliserio, | I | AVCODES |
| 2 | ALL | Aerovallarta, S.A. de C.V. | Callsign: Vallarta, | MEX | AVCODES |
| 3 | ALL | Air Arabia for Air Transport | Callsign: Arabia Avia, | LAR | AVCODES |
| 4 | ALL | Aerovallarta | | | ICAO1 |
| 5 | ALL | ACADIAN LINES LIMITED | | | SCAC4 |
| 6 | ALL | America Latina Logistica | | RA | TRAFFIC |
| 7 | ALLA | ALL-AMERICAN TRANSPORTATION, INC | | | PWRC |
| 8 | ALLA | ALLSTATES TRANSPORT INC | | | SCAC3 |
| 9 | ALLA | ALLAN, L D ENTERPRISES LTD | | | SCAC4 |
| 10 | ALLB | ALLSTATES MOVING & STORAGE | | | SCAC3 |
| 11 | ALLB | ANDERSON LOGISTICS LLC | | | SCAC4 |
| 12 | ALLC | ALL TRUCK TRANSPORTATION CO | | | SCAC3 |
| 13 | ALLC | ALL TRUCK TRANSPORTATION CO INC | | | SCAC4 |
| 14 | ALLD | ALLIED DELIVERY SYSTEM, INC | | | SCAC3 |
| 15 | ALLD | ALLIED TRANSPORTATION CO | | | SCAC4 |
| 16 | ALLE | ALLENS TRANSFER & STORAGE INC | | | SCAC4 |
| 17 | ALLF | ALL-FAB BUILDING COMPONENTS INC | | | SCAC4 |
| 18 | ALLG | ALLIANCE MANAGEMENT | | | SCAC3 |
| 19 | ALLH | ALDEN LEEDS INC | | | SCAC3 |
| 20 | ALLH | ALLTHEWAY TRUCKING INC | | | SCAC4 |
| 21 | ALLI | ALLIANCE TRANSPORT | | | SCAC3 |
| 22 | ALLIC | Air Liquide CO2 Europe GmbH | | DE | VKM |
| 23 | ALLJ | ALSTON, LESLIE EUGENE | | | SCAC3 |
| 24 | ALLJ | ALL-POINTE MOVING & TRUCKING | | | SCAC4 |
| 25 | ALLK | ALL LANES LOGISTICS INC | | | SCAC4 |
| 26 | ALLL | ALLTRANS LTD | | | SCAC3 |
| 27 | ALLL | ALLIED LOGISTICS CORP | | | SCAC4 |
| 28 | ALLM | ALTL INC | | | SCAC4 |
| 29 | ALLN | ALLENS AUTOMOTIVE SPECS INC | | | SCAC3 |
| 30 | ALLN | Auburn and Allentown Railroad | | USA | TRAFFIC |
| 31 | ALLO | ALLSTATES TRANSFER & STORAGE INC | | | SCAC3 |
| 32 | ALLO | ALLIANCE LOGISTICS INC | | | SCAC4 |
| 33 | ALLP | ALL POINTS VANS INC | | | SCAC3 |
| 34 | ALLQ | ALL AROUND THE WORLD | | | SCAC4 |
| 35 | ALLR | ALLER & SHARP, INC | | | SCAC3 |
| 36 | ALLS | ALLISON-MITCHELL TRANSFER CO | | | SCAC3 |
| 37 | ALLS | ALL POINTS AUTO TRANSPORT LP | | | SCAC4 |
| 38 | ALLSK | ALLEGRIA.SK, s.r.o. | | SK | VKM |
| 39 | ALLT | ALLSTATE CO INC | | | SCAC3 |
| 40 | ALLU | ALCONET(ALLIED CONTAINER NETWORK ) BV | | NL | BIC |
| 41 | ALLU | ALCONET (ALLIED CONTAINER NETWORK) | | | SCAC4 |
| 42 | ALLV | ALLIED VAN LINES, INC | | | SCAC3 |
| 43 | ALLV | ALLIED VAN LINES INC | | | SCAC4 |
| 44 | ALLX | General American Marks Co. | added 4/2009 | | NAKINA |
| 45 | ALLX | AllCapital Rail Management, LLC | added 7/2007; eliminated 4/2009 | | NAKINA |
| 46 | ALLX | Alliance Machine Co. | added 4/85; eliminated 7/1989; added 1/1993; 1/1994; eliminated 4/1996; added 10/1996; eliminated 4/1997; 7/2000 (not listed) | | NAKINA |
| 47 | ALLX | Universal Packaging Corp. | added 7/1969; 4/1970-1/1975; eliminated 10/1975 | | NAKINA |
| 48 | ALLX | Allied Chlorine & Chemical Products, Inc. | added 1/1967; eliminated 7/1969 | | NAKINA |
| 49 | ALLX | Allied Chlorine & Chemical Products, Inc. | added 1/67; eliminated 7/69 | | NRHS |
| 50 | ALLX | Universal Packaging Corp. | added 7/69; 4/70-1/75 | | NRHS |
| 51 | ALLX | Alliance Machine Co. | added 4/85; eliminated 7/89; added 1/93; 1/94; eliminated 4/96; added 10/96; eliminated 4/97; 7/2000 | | NRHS |
| 52 | ALLX | *ALLIED CHLORINE & CHEMICAL PRODUCTS, INC. | | | PWRC |
| 53 | ALLX | *UNIVERSAL PACKAGING CORP. | | | PWRC |
| 54 | ALLX | *ALLIANCE MACHINE COMPANY (ALLIANCE SHIPPERS) | | | PWRC |
| 55 | ALLX | +ALLCAPITAL RAIL MANAGEMENT, LLC | | | PWRC |
| 56 | ALLX | Alliance Machine | | | RSRV |
| 57 | ALLX | GENERAL AMERICAN MARKS COMPANY | | | SCAC4 |
| 58 | ALLZ | Alliance Shippers | | | RSRV |
| 59 | ALLZ | ALLIANCE SHIPPERS INC | | | SCAC4 |
