| 1 | BSE | BIRMINGHAM & SOUTHEASTERN RR | | | PWRC |
| 2 | BSE | Braunschweig-Schöniger Eisenbahn | | D | TRAFFIC |
| 3 | BSEA | BAY SEA TRANSPORT INC | | | SCAC3 |
| 4 | BSEA | BLUE STREAK EXPEDITED SERVICES INC | | | SCAC4 |
| 5 | BSEC | BASIC STEEL ERECTORS INC | | | SCAC3 |
| 6 | BSED | BERKSHIRE ESCORTED TOURS | | | SCAC3 |
| 7 | BSED | BENSON & SONS ENTERPRISES | | | SCAC4 |
| 8 | BSEE | BUSY BEE | | | SCAC3 |
| 9 | BSEE | BEDESSE | | | SCAC4 |
| 10 | BSEF | BOSE CORPORATION | | | SCAC3 |
| 11 | BSEF | BOSE CORPORATION | | | SCAC4 |
| 12 | BSEG | Brohltal Schmalspur Eisenbahn Betriebs GmbH | Brohl | D | privat-bahn.de |
| 13 | BSEI | BOSTON SHIPPING ENT INC BROOKLYN | | | SCAC3 |
| 14 | BSEJ | BREAKTHRU SEEDS ENHANCEMENT CORPORA | | | SCAC4 |
| 15 | BSEK | BLOSENSKI TRANSPORT | | | SCAC3 |
| 16 | BSEL | BEST EXECUTIVE LIMOUSINE SERVICE | | | SCAC3 |
| 17 | BSEL | BIG SKY EQUIPMENT LTD | | | SCAC4 |
| 18 | BSEM | BROUSSARD, ED MARINE SERVICE INC | | | SCAC3 |
| 19 | BSEO | B & S STEEL | | | SCAC3 |
| 20 | BSEP | BLUE STAR EXPRESS, INC. | | | SCAC3 |
| 21 | BSEP | BLUE STAR EXPRESS INC | | | SCAC4 |
| 22 | BSEQ | BLUE ROUTE DELIVERY SERVICE | | | SCAC3 |
| 23 | BSEQ | BASIC STRUCTURE ENGINEERING & GLAZI | | | SCAC4 |
| 24 | BSER | BETTES, WARREN EVERETT | | | SCAC3 |
| 25 | BSER | BORDER SERVICES INC | | | SCAC4 |
| 26 | BSERV | Baneservice | Real: bs | N | TRAFFIC |
| 27 | BSES | BUS EXPRESS SERVICES INC | | | SCAC3 |
| 28 | BSEV | BENTEX SERVICES INC | | | SCAC3 |
| 29 | BSEV | BENTEX SERVICES INC | | | SCAC4 |
| 30 | BSEW | BOESEN, T K A/S | | | SCAC3 |
| 31 | BSEW | BEST SHIPPING EVER INC | | | SCAC4 |
| 32 | BSEX | BADGER STATE ETHANOL, LLC | | | PWRC |
| 33 | BSEX | BADGER STATE ETHANOL LLC | | | SCAC4 |
