| 1 | HLB | High-Line Airways, Inc. | Callsign: High-Line, | CDN | AVCODES |
| 2 | HLB | High-Line Airways | | | ICAO1 |
| 3 | HLB | Hessische Landesbahn GmbH | Frankfurt (HLB-Gruppe) | D | privat-bahn.de |
| 4 | HLB | HARLOWS BUS SERVICE INC | | | SCAC4 |
| 5 | HLB | Hessische Landesbahn GmbH | | D | TRAFFIC |
| 6 | HLB | HLB Basis AG | | DE | VKM |
| 7 | HLBA | H L B TRANSPORTATION SERVICES | | | SCAC4 |
| 8 | HLBC | HOLT TRANSPORT BROKERAGE LLC | | | SCAC4 |
| 9 | HLBI | HORVATS LIVE BAIT INC | | | SCAC4 |
| 10 | HLBL | HILBRANDS, LEE TRUCKING INC | | | SCAC4 |
| 11 | HLBP | HILL BROS PRO-FLEET | | | SCAC4 |
| 12 | HLBQ | H & L BROKERAGE INC | | | SCAC4 |
| 13 | HLBR | HILDEBRAND, WESLEY P | | | SCAC4 |
| 14 | HLBT | HILBURN TRUCKING INC | | | SCAC4 |
| 15 | HLBU | HAPAG LLOYD A.G | | D | BIC |
| 16 | HLBY | HILLBILLY EXPRESS INC | | | SCAC4 |
| 17 | HLBZ | HILL BROTHERS TRANSPORTATION | | | PWRC |
| 18 | HLBZ | Hill Brothers Transportation | | | RSRV |
| 19 | HLBZ | HILL BROTHERS TRANSPORTATION | | | SCAC4 |
