| 1 | BLD | Bournemouth Commercial Flight Training Centre | Callsign: Blackadder, | GB | AVCODES |
| 2 | BLDA | BLACK, DAVE TRUCKING | | | SCAC4 |
| 3 | BLDB | BELL DISTRIBUTORS INC | | | SCAC3 |
| 4 | BLDC | BLUE DIAMOND COMPANY, THE | | | SCAC3 |
| 5 | BLDD | BALLARD, DON C | | | SCAC3 |
| 6 | BLDD | BORUSAN LOJISTIK DAGITIM DEPOLAMA T | | | SCAC4 |
| 7 | BLDE | BOLDES TRUCKING INC | | | SCAC4 |
| 8 | BLDF | BALDWIN FREIGHT CO | | | SCAC3 |
| 9 | BLDG | BLACKLEDGE, WILLIAM M | | | SCAC3 |
| 10 | BLDG | BUILDING PLASTICS INC | | | SCAC4 |
| 11 | BLDH | BELL, DON LOGGING INC | | | SCAC3 |
| 12 | BLDI | BOLDA TRUCKING INC | | | SCAC3 |
| 13 | BLDI | BELL LAND IMPROVEMENT INC | | | SCAC4 |
| 14 | BLDJ | BLADE TRUCKING | | | SCAC3 |
| 15 | BLDK | BROME LAKE DUCKS LIMITED | | | SCAC4 |
| 16 | BLDL | BELDALE SHIPPING COMPANY, LTD. | | | SCAC3 |
| 17 | BLDM | BLINDERMAN, R MOTOR LINES INC | | | SCAC4 |
| 18 | BLDN | BALDWIN, KIRK TRUCKING | | | SCAC3 |
| 19 | BLDO | BLUE LINE DISTRIBUTING OF CANADA | | | SCAC4 |
| 20 | BLDP | BLACKROCK CLIMBERS | | | SCAC4 |
| 21 | BLDQ | BOLAND RIGGING INC | | | SCAC3 |
| 22 | BLDQ | BLUE DANUBE TRANSIT CO | | | SCAC4 |
| 23 | BLDR | BELL, DAVID R | | | SCAC3 |
| 24 | BLDR | B L INDUSTRIES HOLDINGS INC | | | SCAC4 |
| 25 | BLDS | BILLS DELIVERY SYSTEM | | | SCAC3 |
| 26 | BLDS | BLADES AVIATION LTD | | | SCAC4 |
| 27 | BLDT | BLADER TRUCKING INC | | | SCAC4 |
| 28 | BLDU | BLUERED BV | | NL | BIC |
| 29 | BLDV | B-LINE DELIVERY SERVICE, INC | | | SCAC3 |
| 30 | BLDW | BALDWIN TRANSPORT INC | | | SCAC3 |
| 31 | BLDX | BLDX A/S | 2007 - | DK | jernbanen.dk |
| 32 | BLDX | BLDX A/S | 2007 - | DK | TRAFFIC |
| 33 | BLDY | BARLETT DELIVERY | | | SCAC3 |
