| 1 | BYS | Joint Stock Company Aviacompany BySky | Callsign: Bel Sky, | BY | AVCODES |
| 2 | BYS | BLANEY & SOUTHERN RWY | | | PWRC |
| 3 | BYSA | BAY STATE TRAVEL CENTER INC | | | SCAC3 |
| 4 | BYSB | BYS SERVICES LLC | | | SCAC4 |
| 5 | BYSC | BAYS, CARL D & SONS | | | SCAC3 |
| 6 | BYSE | BAYSE TRANSPORTATION SERVICE | | | SCAC3 |
| 7 | BYSG | BAY SHIPPING CORPORATION | | | SCAC3 |
| 8 | BYSG | BUSY B'S TRUCKING LLC | | | SCAC4 |
| 9 | BYSH | BLYSTAD SHIPPING (USA) INC | | | SCAC3 |
| 10 | BYSH | BLYSTAD SHIPPING (USA) INC | | | SCAC4 |
| 11 | BYSI | BAY-SEA TRANSPORT INC | | | SCAC3 |
| 12 | BYSL | BARRYS LIMOUSINE SERVICE INC | | | SCAC3 |
| 13 | BYSL | BAYSIDE LOGISTICS & SERVICES LLC | | | SCAC4 |
| 14 | BYSN | BOYD AND SONS CONSTRUCTION LLC | | | SCAC4 |
| 15 | BYSO | BYNUM & SONS TRUCKING | | | SCAC3 |
| 16 | BYSP | BAY SIDE TRANSPORT INC | | | SCAC3 |
| 17 | BYSP | BYRON SHIPPING LTD | | | SCAC4 |
| 18 | BYSQ | BYRONS STORAGE & TFR INC | | | SCAC3 |
| 19 | BYSQ | BAYSIDE TRANSPORT INC | | | SCAC4 |
| 20 | BYSR | BAYSHORE TRANSPORTATION SYSTEM INC | | | SCAC3 |
| 21 | BYSR | BAYSHORE TRANSPORTATION SYSTEM INC | | | SCAC4 |
| 22 | BYSS | BAYLES TOURS & CHARTER BUS SERVICE | | | SCAC3 |
| 23 | BYST | BAYSIDE TRUCKING | | | SCAC4 |
| 24 | BYSU | BAYSHORE SYSTEMS, INC. | | USA | BIC |
| 25 | BYSV | BRAY TRUCKING SERVICE | | | SCAC3 |
| 26 | BYSY | BENNYS TRANSPORTATION INC | | | SCAC4 |
