| 1 | NRT | Norestair, S.L. | Callsign: Norestair, | E | AVCODES |
| 2 | NRT | Norestair | | | ICAO1 |
| 3 | NRT | Northern Refrigerator Line, Inc. | 7/1937-1/1941 | | NAKINA |
| 4 | NRT | Northern Tank Car Line (Northern Refrigerator Line, Inc.) | 7/1935 | | NAKINA |
| 5 | NRT | Northern Refrigerator Line, Inc. | Apr-38 | | NRHS |
| 6 | NRT | NORTHERN REFRIGERATOR LINE, INC. | | | PWRC |
| 7 | NRTA | NORRIS TRANSPORT INC | | | SCAC3 |
| 8 | NRTA | NORTH AUTO | | | SCAC4 |
| 9 | NRTC | N E R TRANSPORT CO INC | | | SCAC4 |
| 10 | NRTF | NORTHERN TRANSFER & STORAGE | | | SCAC3 |
| 11 | NRTF | NRT FREIGHT CORP | | | SCAC4 |
| 12 | NRTG | NEW RIVER TRUCKING LLC | | | SCAC4 |
| 13 | NRTH | NORTH RIDGE TRUCKING COMPANY | | | SCAC3 |
| 14 | NRTI | NORTHRIDGE TRUCKING CORP | | | SCAC3 |
| 15 | NRTI | NITE RIDER TRANSPORT INC | | | SCAC4 |
| 16 | NRTJ | NATIONAL REFRIGERATED TRUCKING LLC | | | SCAC4 |
| 17 | NRTL | NOBACH, RANDY TRUCKING LLC | | | SCAC4 |
| 18 | NRTM | NORTEM | | | SCAC4 |
| 19 | NRTN | NATIONAL RETAIL TRANSPORTATION INC | | | SCAC4 |
| 20 | NRTO | NORTHWEST AUTO PARTS | | | SCAC3 |
| 21 | NRTP | NORFOLK TRANSPORTATION INC | | | SCAC3 |
| 22 | NRTP | NORTON TRANSPORTATION LLC | | | SCAC4 |
| 23 | NRTQ | NORRIS TRANSPORT LIMITED | | | SCAC3 |
| 24 | NRTQ | NORDEN ROAD TRANSPORT | | | SCAC4 |
| 25 | NRTR | NATIONAL RETAIL TRANSPORTATION INC | | | SCAC4 |
| 26 | NRTT | NORTHEAST TRANSPORT INC | | | SCAC4 |
| 27 | NRTU | NRS CORPORATION | | J | BIC |
| 28 | NRTV | NORTHRIDGE TRAVEL SERVICE | | | SCAC3 |
| 29 | NRTV | NATIONAL RETAIL TRANSPORTATION INC | | | SCAC4 |
| 30 | NRTW | NORMS TOWING | | | SCAC3 |
| 31 | NRTX | Northern Tank Car Line (Northern Refrigerator Line, Inc.) | 7/1930-1/1941 | | NAKINA |
| 32 | NRTX | Northern Tank Car Lines (Northern Refrigerator Line, Inc.) | Apr-38 | | NRHS |
| 33 | NRTX | NORTHERN TANK CAR LINES (NORTHERN REFRIGERATOR LINE, INC.) | | | PWRC |
| 34 | NRTX | Music City Star | | | RSRV |
| 35 | NRTX | REGIONAL TRANSPORTATION AUTHORITY-N | | | SCAC4 |
| 36 | NRTX | Music City Star | Nashville | USA | TRAFFIC |