| 1 | ARC | Air Routing International Corp. | IATA: ZJ, Name changed to Air Routing International LP | USA | AVCODES |
| 2 | ARC | Air Routing International Corp. | IATA: XC, | USA | AVCODES |
| 3 | ARC | Air Routing International L.P. | IATA: ZJ, Name changed from Air Routing International Corp. | USA | AVCODES |
| 4 | ARC | Air Routing International Corp. | | | ICAO1 |
| 5 | ARC | Alexander R.R. Co. | 1/1975-7/2005 | | NAKINA |
| 6 | ARC | Alexander R.R. Co. | 1/75-7/2000 | | NRHS |
| 7 | ARC | ALEXANDER RAILROAD CO. | | | PWRC |
| 8 | ARC | Alexander Railroad | | | RSRV |
| 9 | ARC | Amey Roadstone Corporation | | GB | TRAFFIC |
| 10 | ARC | Aqaba Railway Corporation | | JO | VKM |
| 11 | ARCA | ACE RELOCATION SYSTEMS INC | | | SCAC4 |
| 12 | ARCB | AROMATIC TRUCKING CORP | | | SCAC3 |
| 13 | ARCC | ARNCO TRANSPORTATION INC | | | SCAC4 |
| 14 | ARCD | ARCADIA VAN LINES | | | SCAC3 |
| 15 | ARCE | ARAB CARTAGE & EXPRESS CO INC | | | SCAC4 |
| 16 | ARCE | ARCELOR | | | TRAFFIC |
| 17 | ARCESE | Arcese | | I | TRAFFIC |
| 18 | ARCF | AMERICAN CARTAGE | | | SCAC3 |
| 19 | ARCF | AIR CARTAGE EXPRESS LLC | | | SCAC4 |
| 20 | ARCG | AIR CARGO TRANSIT INC | | | SCAC3 |
| 21 | ARCG | AIR CARGO TRANSIT INC | | | SCAC4 |
| 22 | ARCH | ARCHER, GARY TRUCKING | | | SCAC3 |
| 23 | ARCH | ARPIN OF RICHMOND INC | | | SCAC4 |
| 24 | ARCHI | Archirodon | | GR | TRAFFIC |
| 25 | ARCI | AMERICAN RAILWAY CAR INSTITUTE | | | PWRC |
| 26 | ARCI | ARC TRUCKING MESSENGER CORP | | | SCAC3 |
| 27 | ARCI | AEROCARGO INC | | | SCAC4 |
| 28 | ARCJ | ARCHER, JUNE E | | | SCAC3 |
| 29 | ARCK | A R CARRIERS INC | | | SCAC3 |
| 30 | ARCK | ARMSTRONG RELOCATION CO KNOXVILLE T | | | SCAC4 |
| 31 | ARCM | ARCTIC EXPRESS INC | | | SCAC3 |
| 32 | ARCM | ARTHUR COMPANIES INC | | | SCAC4 |
| 33 | ARCM | Arcelor Mittal | | EU | TRAFFIC |
| 34 | ARCN | ARCH TRANSPORTATION | | | SCAC3 |
| 35 | ARCO | ARCO PIPE LINE COMPANY | | | SCAC3 |
| 36 | ARCO | ARMSTRONG RELOCATION COMPANY OHIO L | | | SCAC4 |
| 37 | ARCO | ARCO Transportation GmbH | | D | TRAFFIC |
| 38 | ARCO | Arco Transportation GmbH | | DE | VKM |
| 39 | ARCP | ARCADE SHIPPING A S | | | SCAC3 |
| 40 | ARCQ | AMERICAS CATCH INC | | | SCAC4 |
| 41 | ARCR | AIR CONSOLIDATORS INC | | | SCAC3 |
| 42 | ARCR | A R C TRANSPORTATION INC | | | SCAC4 |
| 43 | ARCS | AMERISOUTH RECYCLING AND CONSULTING | | | SCAC4 |
| 44 | ARCU | SUNMARINE SHIPPING SERVICES LLC | | UAE | BIC |
| 45 | ARCU | AREUCON LEASING LTD | | | SCAC3 |
| 46 | ARCU | SUNMARINE SHIPPING SERVICES | | | SCAC4 |
| 47 | ARCV | ARC TRANSPORTATION | | | SCAC4 |
| 48 | ARCW | ARCTIC WHITNEY | | | SCAC3 |
| 49 | ARCX | Arizona Rail Car Inc. | 1/1994-7/2005 (not listed) | | NAKINA |
| 50 | ARCX | Alaska Rail Car Co. | added 7/1964; 7/1965-1/1980; eliminated 7/1992 | | NAKINA |
| 51 | ARCX | Arizona Rail Car Inc. | 1/94-7/2000 | | NRHS |
| 52 | ARCX | Alaska Rail Car Co. | added 7/64; 7/65-1/80; eliminated 7/92 | | NRHS |
| 53 | ARCX | *ALASKA RAILCAR CO. | | | PWRC |
| 54 | ARCX | *AMERICAN RAILWAY COMPANY OF TEXAS | | | PWRC |
| 55 | ARCX | +(RPSX) ARIZONA RAIL CAR, INC | | | PWRC |
| 56 | ARCX | Alaska Rail Car (Arizona Rail Car) | | | RSRV |
| 57 | ARCX | ALASKA RAIL CAR CO | | | SCAC3 |
| 58 | ARCX | ARIZONA RAIL CAR INC | | | SCAC4 |
| 59 | ARCY | ALLTRANS CARRIERS INC | | | SCAC4 |
| 60 | ARCZ | Arriva vlaky s.r.o. | Real: ARR | CZ | TRAFFIC |
