| 1 | NKT | Nantucket Shuttle/Horizon Air Charter, Inc. | Callsign: Shuttleflight, ICAO designator changed to NHA | USA | AVCODES |
| 2 | NKTG | NANRIK TRUCKING INC | | | SCAC3 |
| 3 | NKTG | NOVAK TRUCKING INC | | | SCAC4 |
| 4 | NKTI | NIKOLAUS TANK LINES INC | | | SCAC3 |
| 5 | NKTI | N & K TRUCKING | | | SCAC4 |
| 6 | NKTL | NACKAWIC TRANSPORT LTD | | | SCAC3 |
| 7 | NKTL | NACKAWIC TRANSPORT LTD | | | SCAC4 |
| 8 | NKTN | N & K TRUCKING LLC | | | SCAC4 |
| 9 | NKTO | NEL-KEF TRANSPORT | | | SCAC4 |
| 10 | NKTR | NORTHWEST TANK LINES INC | | | SCAC4 |
| 11 | NKTT | NELSON, KEN TRANSPORT LTD | | | SCAC4 |
| 12 | NKTU | ALTUN LOJISTIK A.S. | | TR | BIC |
| 13 | NKTU | NOKTA GEMI ACENTELIGI VEULUSLARASI | | | SCAC4 |
