| 1 | NSI | Northern Skies Aviation, Inc. | Callsign: Northern Skies, | USA | AVCODES |
| 2 | NSIB | NOVA SERVICES INC | | | SCAC4 |
| 3 | NSIB | | City: Novosibirsk | RUS | TRAFFIC |
| 4 | NSIC | NESHER INDUSTRIES INC | | | SCAC3 |
| 5 | NSIC | NINE ONE FOUR ZERO-ZERO SIX ONE FOU | | | SCAC4 |
| 6 | NSID | NORCO SPECIALIZED INC | | | SCAC4 |
| 7 | NSIF | NASSIF, F M LTD | | | SCAC4 |
| 8 | NSIN | NORTH STAR INTERNATIONAL | | | SCAC4 |
| 9 | NSIQ | NORTH STAR TRANSIT INC | | | SCAC3 |
| 10 | NSIQ | NORTON SCIENTIFIC INC | | | SCAC4 |
| 11 | NSIR | NSI RECYCLING INC | | | SCAC4 |
| 12 | NSIU | NORTHLAND SERVICES, INC. | | | SCAC3 |
| 13 | NSIV | NAF SHIPPING INC | | | SCAC4 |
| 14 | NSIW | NORTH SHORE INDUSTRIAL WHEEL MFG | | | SCAC4 |
| 15 | NSIZ | NSP INSUSTRIES | | | PWRC |
| 16 | NSIZ | NORTHLAND SERVICES INC | | | SCAC4 |
