| 14601 | ATNP | AUSTINS TRANSPORTATION INC | | | SCAC4 |
| 14602 | ATNQ | AAA T TRUCKING | | | SCAC3 |
| 14603 | ATNQ | AUTO TANQUES SUAREZ SA DE CV | | | SCAC4 |
| 14604 | ATNS | ARROW TRANSFER & STORAGE CO | | | SCAC3 |
| 14605 | ATNS | ATLANSHIP S A | | | SCAC4 |
| 14606 | ATNT | ATLANTIC TRANSPORTATION COMPANY | | | SCAC3 |
| 14607 | ATNT | ATORON TRUCKING CORPORATION | | | SCAC4 |
| 14608 | ATNU | ANELTIA TRADING, S.L.U. | | E | BIC |
| 14609 | ATNU | ADVANCED TECHNICAL TRADING SERVICES | | | SCAC4 |
| 14610 | ATNV | ACME TRANSPORT SERVICES INC | | | SCAC4 |
| 14611 | ATNW | ATLANTIC & WESTERN TRANSPORT INC | | | SCAC3 |
| 14612 | ATNW | ALANIS TRUCKING COMPANY | | | SCAC4 |
| 14613 | ATNY | ATRANS INCORPORATED | | | SCAC3 |
| 14614 | ATNY | ANTELOPE TRANSPORTATION LP | | | SCAC4 |
| 14615 | ATO | Air Tonga | | TO | AVCODES |
| 14616 | ATO | Airways Flygutbildning AB | Callsign: School Flying, | S | AVCODES |
| 14617 | ATOA | ATHINIOTISSA SHIPPING CO LTD | | | SCAC3 |
| 14618 | ATOA | ALAN TRANSPORT | | | SCAC4 |
| 14619 | ATOB | ALTO BROTHERS TRUCKING INC | | | SCAC3 |
| 14620 | ATOB | ALTO BROTHERS TRUCKING INC | | | SCAC4 |
| 14621 | ATOC | AUTOMOBILE TRANSPORT COMPANY OF CAL | | | SCAC3 |
| 14622 | ATOE | AUTO EXPRESS SALDIVAR | | | SCAC4 |
| 14623 | ATOF | AIRFREIGHT TWO ONE ZERO ZERO (2100) | | | SCAC4 |
| 14624 | ATOG | ANTON TOUR & TRAVEL SERVICE | | | SCAC3 |
| 14625 | ATOH | AUTO HAULERS INC | | | SCAC3 |
| 14626 | ATOH | ATOCHA TRUCKING | | | SCAC4 |
| 14627 | ATOI | ALTOM TRANSPORT, INC | | | SCAC3 |
| 14628 | ATOI | ALTOM TRANSPORT INC | | | SCAC4 |
| 14629 | ATOJ | AIRPORT TRANSPORTATION SERVICE | | | SCAC3 |
| 14630 | ATOJ | AZTECA TRANSPORT | | | SCAC4 |
| 14631 | ATOK | ATOCHEM | | | PWRC |
| 14632 | ATOK | ANCO TRANSPORTATION SERIVCE | | | SCAC3 |
| 14633 | ATOK | ARTEK MILLWORK | | | SCAC4 |
| 14634 | ATOL | AIRLINE TOWING INC | | | SCAC3 |
| 14635 | ATOL | ATLANTIC OCEAN LINE LTD | | | SCAC4 |
| 14636 | ATOM | ATOMIC TRANSFER LIMITED | | | SCAC3 |
| 14637 | ATON | ARMORED TRANSPORT OF NEVADA INC | | | SCAC3 |
| 14638 | ATOO | AMERICAN TRANSIT & TOUR | | | SCAC3 |
| 14639 | ATOO | ARLEN TOOL CO LTD | | | SCAC4 |
| 14640 | ATOP | AMTRAIL TRANSPORTATION INC | | | SCAC3 |
| 14641 | ATOP | AUTOTRANSPORTES REFRIGERADOS TORRCO | | | SCAC4 |
| 14642 | ATOQ | AMAR TRANSPORTATION INC | | | SCAC3 |
| 14643 | ATOR | AUTO MOVERS INC | | | SCAC3 |
| 14644 | ATOS | AT-ONCE DELIVERY SYSTEM INCORPORATE | | | SCAC3 |
| 14645 | ATOS | ADAMS TRANSPORT COMPANY | | | SCAC4 |
| 14646 | ATOT | ATOMIC TRANSIT, INC | | | SCAC3 |
| 14647 | ATOT | AIR-TIME ON-TIME EXPRESS | | | SCAC4 |
| 14648 | ATOU | ARKEMA | | F | BIC |
| 14649 | ATOU | ATOCHEM | | | PWRC |
| 14650 | ATOU | Atochem | | | RSRV |
| 14651 | ATOU | ATOCHEM | | | SCAC3 |
| 14652 | ATOU | ATOFINA | | | SCAC4 |
| 14653 | ATOW | ATLAS TOWING CO/CONVENT GARDEN SERV | | | SCAC3 |
| 14654 | ATOW | A TOWING SERVICE LTD | | | SCAC4 |
| 14655 | ATOY | ANTHONY TRUCK SERVICES | | | SCAC4 |
| 14656 | ATP | Servicios Aereos del Altiplano, S.A. de C.V. | Callsign: Altiplano, | MEX | AVCODES |
| 14657 | ATP | ASTRAL Colombia - Aerotransportes Especiales Ltda. | | | ICAO1 |
| 14658 | ATPA | ATLAS TRANSPORTATION COMPANY | | | SCAC3 |
| 14659 | ATPA | ATLAS TRANSPORTATION COMPANY | | | SCAC4 |
| 14660 | ATPB | A T S TRANSPORTATION SERVICES INC | | | SCAC3 |
| 14661 | ATPB | AUTOTRANSPORTE PRASA | | | SCAC4 |
| 14662 | ATPC | AIRLINES TRANSPORTATION COMPANY | | | SCAC3 |
| 14663 | ATPC | AIRLINES TRANSPORTATION COMPANY | | | SCAC4 |
| 14664 | ATPD | AIR TRANSPORT INC | | | SCAC3 |
| 14665 | ATPD | AUTOTRANSPORTES DARMA S A DE C V | | | SCAC4 |
| 14666 | ATPE | ATKINS PETROLEUM PRODUCTS INC | | | SCAC4 |
| 14667 | ATPF | ATLANTIC & PACIFIC CO INC | | | SCAC3 |
| 14668 | ATPG | AMERICAN TRANSPORT INC | | | SCAC3 |
| 14669 | ATPG | AUTOTRANSPORTES GUARDIOLA | | | SCAC4 |
| 14670 | ATPH | ACE TRANSPORTATION, INC. | | | SCAC3 |
| 14671 | ATPH | ACE TRANSPORTATION LLC (N/K/A UV LO | | | SCAC4 |
| 14672 | ATPI | ATLANTIC-PACIFIC VAN & STORAGE INC | | | SCAC3 |
| 14673 | ATPI | ARCHER THREE P (3P) LOGISTICS | | | SCAC4 |
| 14674 | ATPJ | ATPIC TRUCKING CO INC | | | SCAC3 |
| 14675 | ATPK | ATKINS PICKLE COMPANY INC | | | SCAC3 |
| 14676 | ATPL | ATPAC INC | | | SCAC3 |
| 14677 | ATPL | ATLS | | | SCAC4 |
| 14678 | ATPL | Alpha Trains Polska Sp. z o.o. | | PL | VKM |
| 14679 | ATPM | ATLANTIC PORTS INTERNATIONAL | | | SCAC3 |
| 14680 | ATPM | ATLANTIC PLANT MAINTENANCE INC | | | SCAC4 |
| 14681 | ATPM | Assocjazzjoni Trasport Pubbliku | | M | TRAFFIC |
| 14682 | ATPN | AMERICAN TRANSPORTATION MANAGEMENT | | | SCAC4 |
| 14683 | ATPO | ANDERSON TRANSPORT CO | | | SCAC3 |
| 14684 | ATPOL | Atlas Poland Sp. z o.o. | | PL | VKM |
| 14685 | ATPQ | ACME TRANSPORT COMPANY | | | SCAC3 |
| 14686 | ATPR | ARTRANSPORT INC | | | SCAC3 |
| 14687 | ATPR | ALLSTAR TRANSPORT SERVICES INC | | | SCAC4 |
| 14688 | ATPS | ATLANTIS TRANSPORTATION SERVICES IN | | | SCAC3 |
| 14689 | ATPS | ATLANTIS TRANSPORTATION SERVICES IN | | | SCAC4 |
| 14690 | ATPT | ATLANTIC PRATT OIL CO INC | | | SCAC4 |
| 14691 | ATPV | ARCTIC TRANSPORT | | | SCAC3 |
| 14692 | ATPX | American Tar Products Co., Inc. | 7/1930-7/1932 | | NAKINA |
| 14693 | ATPX | American Tar Products Co., Inc. (Koppers Products Co.) | 7/1935-7/1936 | | NAKINA |
| 14694 | ATPX | Koppers Co. | 7/1937-1/1941 | | NAKINA |
| 14695 | ATPX | American Tar Products Co. | 8/1920-7/1923 | | NAKINA |
| 14696 | ATPX | American Tar Products Co., Inc. (Koppers Co.) | Apr-38 | | NRHS |
| 14697 | ATPX | KOPPERS CO. {AMERICAN TAR PRODUCTS CO.} | | | PWRC |
| 14698 | ATPY | A TRANSPORT NORTHWEST COMPANY | | | SCAC3 |
| 14699 | ATPY | ACTION PETROLEUM COMPANY LTD | | | SCAC4 |
| 14700 | ATPZ | AVTEX PLANT | | | PWRC |
