| 9501 | AMZS | A & M SPECIALIST INC | | | SCAC3 |
| 9502 | AMZS | ALMAZO LINE LOGISTICS SA DE CV | | | SCAC4 |
| 9503 | AMZT | AMSTUTZ TRUCKING CO | | | SCAC3 |
| 9504 | AMZT | AMEZOLA TRUCKING | | | SCAC4 |
| 9505 | AMZU | TEXTAINER EQUIPMENT MANAGEMENT LTD | | BM | BIC |
| 9506 | AMZV | AMERILANE LLC | | | SCAC4 |
| 9507 | AMZW | AGIOS MINAS SHIPPING COMPANY | | | SCAC4 |
| 9508 | AN | Ansett Australia Holdings Limited | ICAO: AAA, Callsign: Ansett, IATA Prefix: 090, Ceased operations 04 March 2002. | AUS | AVCODES |
| 9509 | AN | Australian National Airways PTY Ltd. / Ansett Airways PTY Ltd. | Callsign: Austair, | AUS | AVCODES |
| 9510 | AN | Ansett Airlines of Australia | ICAO: AAA, Callsign: Austair, IATA Prefix: 090, Name changed to Ansett Australia Holdings Limited. | AUS | AVCODES |
| 9511 | AN | Advanced Air, LLC | ICAO: WSN, Callsign: Wingspan, | USA | AVCODES |
| 9512 | AN | AN Ry. LLC | added 1/2003; 7/2005 | | NAKINA |
| 9513 | AN | Apalachicola Northern R.R. Co. | 8/1920-7/2000; eliminated 1/2003 | | NAKINA |
| 9514 | AN | Apalachicola Northern R.R. Co. | 7/23-7/2000 | | NRHS |
| 9515 | AN | AN RAILWAY LLC (APALACHICOLA NORTHERN RAILROAD) | | | PWRC |
| 9516 | AN | Apalachicola Northern Railroad (AN Railway) | | | RSRV |
| 9517 | AN | Australian National | | AUS | TRAFFIC |
| 9518 | AN | Arriva Nederland | | NL | VKM |
| 9519 | AN&N | Anthony & Northern Ry. Co. | 8/1920-7/1932 | | NAKINA |
| 9520 | AN&N | Anthony & Northern Ry. Co. | 23-Jul | | NRHS |
| 9521 | AN&N | ANTHONY & NORTHERN RY. CO. | | | PWRC |
| 9522 | ANA | All Nippon Airways Co. Ltd. | IATA: NH, Callsign: All Nippon, IATA Prefix: 205, | J | AVCODES |
| 9523 | ANA | All Nippon Airways | IATA: NH | | ICAO1 |
| 9524 | ANA | All Nippon Airways Co. Ltd. | | J | TRAFFIC |
| 9525 | ANAA | ARGOSY & ATLAS AIR SPACE CARGO | | | SCAC3 |
| 9526 | ANAB | AMIINA TRANSPORT | | | SCAC4 |
| 9527 | ANAC | ANACHEMIA CHEMICAL INC | | | SCAC4 |
| 9528 | ANAD | ANDERSON ARMORED CAR SERVICE INC | | | SCAC3 |
| 9529 | ANAE | ANDING TRANSIT INC | | | SCAC3 |
| 9530 | ANAG | ANDERSON CARGO SERVICES INC | | | SCAC4 |
| 9531 | ANAH | AMERICAN AUTO CARRIERS INC | | | SCAC3 |
| 9532 | ANAH | ANNA TRANSPORTATION INC | | | SCAC4 |
| 9533 | ANAI | ANAHEIM BUILDERS SUPPLY INC | | | SCAC3 |
| 9534 | ANAI | ANTIQUE JUKEBOX RESTORATION | | | SCAC4 |
| 9535 | ANAJ | ATLANTIC RELOCATION SYSTEMS | | | SCAC4 |
| 9536 | ANAK | ANT EXPRESS INC | | | SCAC4 |
| 9537 | ANAL | AMERICAN NATIONAL DIVERSIFIED INC | | | SCAC4 |
| 9538 | ANAM | ANANDSIR TRANSPORT LTD | | | SCAC4 |
| 9539 | ANAN | ANASTASIO, A & SONS TRUCKING COMPAN | | | SCAC3 |
| 9540 | ANAN | ANASTASIO, A & SONS TRUCKING COMPAN | | | SCAC4 |
| 9541 | ANAO | ALPERT & ALPERT IRON & METAL INC | | | SCAC3 |
| 9542 | ANAP | A & A TRANSPORT INC | | | SCAC3 |
| 9543 | ANAQ | ANSAC | | | SCAC4 |
| 9544 | ANAR | ANN ARBOR MOVING & STORAGE | | | SCAC3 |
| 9545 | ANAR | A & A TRANSPORTATION | | | SCAC4 |
| 9546 | ANAS | ANNACIS AUTO TERMINALS LTD | | | SCAC3 |
| 9547 | ANAT | A & A TRANSFER & STORAGE INC | | | SCAC3 |
| 9548 | ANAT | A & A TRANSFER & STORAGE INC | | | SCAC4 |
| 9549 | ANAT | Anatolian | | TR | TRAFFIC |
| 9550 | ANATR | Association Neuchâteloise des Amis du Tramway | | CH | TRAFFIC |
| 9551 | ANAU | ALLIANCE NAVIGATION LINE, INC. | | | PWRC |
| 9552 | ANAU | Alliance Navigation Line | | | RSRV |
| 9553 | ANAU | ALLIANCE NAVIGATION LINE | | | SCAC3 |
| 9554 | ANAV | A & A TOW SERVICE INC | | | SCAC3 |
| 9555 | ANAW | ARTANA | | | SCAC4 |
| 9556 | ANAX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 9557 | ANAX | General Electric Railcar Services Corp. | added 7/1997; eliminated 1/2000 | | NAKINA |
| 9558 | ANAX | EXCEL Railcar Corp. | added 4/1995; eliminated 7/1997 | | NAKINA |
| 9559 | ANAX | EXCEL Transnational, Inc. | added 7/1989; 1/1994; eliminated 4/1995 | | NAKINA |
| 9560 | ANAX | Excel Railcar Corp. | added 7/1982; 1/1985; eliminated 7/1989 | | NAKINA |
| 9561 | ANAX | The Anaconda Co. | added 10/1955; 10/1957; eliminated 10/1960 | | NAKINA |
| 9562 | ANAX | Anaconda Copper Mining Co. | 1/1952; 7/1954; eliminated 10/1955 | | NAKINA |
| 9563 | ANAX | Anaconda Copper Mining Co. | Jan-52 | | NRHS |
| 9564 | ANAX | The Anaconda Co. | 10/57; eliminated 10/60 | | NRHS |
| 9565 | ANAX | Excel Railcar Corp. | added 7/82; eliminated 7/89 | | NRHS |
| 9566 | ANAX | EXCEL Transnational, Inc. | added 7/89; 1/94; eliminated 4/95 | | NRHS |
| 9567 | ANAX | EXCEL Railcar Corp. | added 4/95; eliminated 7/97 | | NRHS |
| 9568 | ANAX | General Electric Railcar Services Corp. | added 7/97; eliminated 1/2000 | | NRHS |
| 9569 | ANAX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 9570 | ANAX | *THE ANACONDA CO. [ANACONDA COPPER MINING CO.] | | | PWRC |
| 9571 | ANAX | +GENERAL ELECTRIC RAIL SERVICES CORP. [GENERAL ELECTRIC RAILCAR SERVICES CORP.; EXCEL RAILCAR CORP.; EXCEL TRANSNATIONAL, INC.] | | | PWRC |
| 9572 | ANAX | The Anaconda Company (GE Rail Services Corporation) | | | RSRV |
| 9573 | ANAX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
| 9574 | ANB | Air Navigation And Trading Co. Ltd. | Callsign: Air Nav, Established in 1947 | GB | AVCODES |
| 9575 | ANB | Air New-Bec, Inc | | CDN | AVCODES |
| 9576 | ANB | Air Navigation And Trading Co. Ltd. | | | ICAO1 |
| 9577 | ANB | Alsternordbahn | | D | TRAFFIC |
| 9578 | ANBA | ANDERSON BAKERY CO | | | SCAC3 |
| 9579 | ANBD | ANDERSON, BRAD K | | | SCAC4 |
| 9580 | ANBF | AMERICAN BACKHAUL | | | SCAC4 |
| 9581 | ANBH | A & B HOT SHOT SERVICE | | | SCAC3 |
| 9582 | ANBI | A & B CARRIERS INC | | | SCAC3 |
| 9583 | ANBJ | ANYWHERE TRANSPORT CORPORATION | | | SCAC4 |
| 9584 | ANBK | ANDREWS BUS SERVICE INC | | | SCAC3 |
| 9585 | ANBL | A & B LEASING CO | | | SCAC3 |
| 9586 | ANBL | A & B LOGISTICS INC | | | SCAC4 |
| 9587 | ANBM | AMERICAN BUS LINE INC, THE | | | SCAC4 |
| 9588 | ANBN | ANGERER, BENNIE | | | SCAC3 |
| 9589 | ANBN | ADRIAN MANUFACTURING INC | | | SCAC4 |
| 9590 | ANBO | ANDERSEN BOAT TRANSPORT | | | SCAC4 |
| 9591 | ANBP | A & B TRANSPORTATION SERVICES | | | SCAC3 |
| 9592 | ANBP | A & B TRANSPORTATION SERVICES | | | SCAC4 |
| 9593 | ANBQ | ANDYS BOSTON & QUINCY EXPRESS CO IN | | | SCAC3 |
| 9594 | ANBS | ANDERSON BROS STORAGE & MOVING CO | | | SCAC3 |
| 9595 | ANBS | ANBROS MARITIME S A | | | SCAC4 |
| 9596 | ANBT | AMERICAN BOAT CARRIERS INC | | | SCAC3 |
| 9597 | ANBT | AMERICAN BOAT CARRIERS INC | | | SCAC4 |
| 9598 | ANBU | ABC CONTAINERLINE N.V. | | | SCAC3 |
| 9599 | ANBU | ABC CONTAINERLINE NV | | | SCAC4 |
| 9600 | ANBW | A & B WILSON & SONS INC | | | SCAC3 |
