| Carrier Code | Carrier Name |
| ATLZ | ATLANTIC LINES LTD |
| ATOA | ATHINIOTISSA SHIPPING CO LTD |
| ATOE | ASSOCIATED TRANSPORT LINE INC |
| ATOU | ATOCHEM |
| ATRU | ANTRAK GROUP LTD |
| ATSG | ASCOT SHIPPING LIMITED |
| ATSU | APOLLO SHIPPING & TRADING |
| ATVU | ATV ALLGEMEINE TRANSPORT UND VERTRIEBS-GMBH |
| ATZL | ATLANTIC TRANSPORT CO LTD |
| AUHU | AGENCIA ULTICA |
| AULE | ALLEGRE SHIPPING CORPORATION |
| AULU | ABC CONTAINER LINE N V |
| AUNV | AURORA NAVIGATION S A PANAMA |
| AUOM | AUTOMAR INC |
| AUSC | AUBURN SHIPPING CORPORATION |
