| 1 | NCT | Pete Air Co., Ltd. | IATA: XW, Callsign: Pete Air, Name changed to Nokscoot | T | AVCODES |
| 2 | NCT | NokScoot Airlines Company Limited | IATA: XW, Callsign: Big Bird, IATA Prefix: 478, Founded on 20 August 2014. Commenced operations on 20 May 2015. Ceased operations on 26 June 2020. NokScoot is a joint venture of Thailand's Nok Air and Singapore based Scoot. | T | AVCODES |
| 3 | NCT | NORTH CHARLESTON TERMINAL COMPANY | | | PWRC |
| 4 | NCT | NORTHEAST CHARTER AND TOUR INC | | | SCAC4 |
| 5 | NCTA | NEW CENTURY TRANSPORTATION INC | | | SCAC4 |
| 6 | NCTC | N/C TRUCKING COMPANY | | | SCAC3 |
| 7 | NCTC | NET CYCLE TRADING CORP | | | SCAC4 |
| 8 | NCTD | NESTEBY, CHUCK TRUCKING INC | | | SCAC3 |
| 9 | NCTD | NORTH AMERICAN TRADING | | | SCAC4 |
| 10 | NCTD | North County Transit District (San Diego) | | US-CA | TRAFFIC |
| 11 | NCTF | NEW CAPITAL TRANSPORT LTD | | | SCAC4 |
| 12 | NCTG | NEW CENTURY AG | | | SCAC4 |
| 13 | NCTH | NORTH CENTRAL TRANSPORT INC | | | SCAC3 |
| 14 | NCTH | NOVACAM TECHNOLOGIES INC | | | SCAC4 |
| 15 | NCTI | N C TRANSPORT INC | | | SCAC3 |
| 16 | NCTI | NEW COUNTRY TRANSPORT INC | | | SCAC4 |
| 17 | NCTJ | NEW CREATION TRANSPORT INC | | | SCAC4 |
| 18 | NCTK | NATIONAL CONTAINER LINE (HK) LTD | | | SCAC4 |
| 19 | NCTL | NORTH COAST TRUCK LINE LLC | | | SCAC4 |
| 20 | NCTM | NORM CRISP TRUCKING | | | SCAC4 |
| 21 | NCTN | NICHOLS TRUCKING CO | | | SCAC3 |
| 22 | NCTO | NATIONAL COMMERCIAL TRANSPORTATION | | | SCAC3 |
| 23 | NCTP | NORTH COAST TRANSPORTATION INC | | | SCAC3 |
| 24 | NCTQ | NEW CENTURY TRANSPORTATION INC | | | SCAC4 |
| 25 | NCTR | North Central Texas Ry., Inc. | added 7/1982; eliminated 1/1983 | | NAKINA |
| 26 | NCTR | North Central Texas Ry., Inc. | added 7/82; eliminated 1/83 | | NRHS |
| 27 | NCTR | NORTH CENTRAL TEXAS RAILWAY, INC. | | | PWRC |
| 28 | NCTS | NORTH COUNTRY TRANSPORTATION SERVIC | | | SCAC3 |
| 29 | NCTS | NIC TRANSPORT LLC | | | SCAC4 |
| 30 | NCTU | ORCA CONTAINER ASSET MANAGEMENT | | ZA | BIC |
| 31 | NCTU | NORTHBROOK CONTAINER LEASING | | | PWRC |
| 32 | NCTU | Northbrook Container Leasing | | | RSRV |
| 33 | NCTU | NORTHBROOK CONTAINER LEASING | | | SCAC3 |
| 34 | NCTU | ORCA CONTAINER ASSET MANAGEMENT | | | SCAC4 |
| 35 | NCTW | NORTH CREEK TRUCKING LC | | | SCAC4 |
| 36 | NCTX | The CIT Group/Capital Finance, Inc. | added 1/2006 | | NAKINA |
| 37 | NCTX | PLM International, Inc. | added 4/1991; 1/1994-7/2005; eliminated 1/2006 | | NAKINA |
| 38 | NCTX | PLM Railcar Management Services Canada Ltd. | eliminated 4/1991 | | NAKINA |
| 39 | NCTX | General Electric Railcar Services Corp. | added 1/1984 | | NAKINA |
| 40 | NCTX | North American Car Corp. | added 1/1976; 1/1980; eliminated 1/1984 | | NAKINA |
| 41 | NCTX | North American Car (Canada) Ltd. | added 7/1963; 7/1965-1/1975; eliminated 1/1976 | | NAKINA |
| 42 | NCTX | North American Car (Canada) Ltd. | added 7/63; 7/65-1/75 | | NRHS |
| 43 | NCTX | North American Car Corp. | Jan-80 | | NRHS |
| 44 | NCTX | PLM Railcar Management Services Canada Ltd. | eliminated 4/91 | | NRHS |
| 45 | NCTX | PLM International, Inc. | added 4/91; 1/94-7/2000 | | NRHS |
| 46 | NCTX | *NORTH CENTRAL TEXAS RAILWAY, INC. | | | PWRC |
| 47 | NCTX | *(NATX) GENERAL ELECTRIC RAILCAR SERVICES CORP. [NORTH AMERICAN CAR CORP.] | | | PWRC |
| 48 | NCTX | +THE CIT GROUP/CAPITAL FINANCE, INC. [(PLMX) PLM INTERNATIONAL, INC.] | | | PWRC |
| 49 | NCTX | GE Rail Services | | | RSRV |
| 50 | NCTX | CIT GROUP/CAPITAL FINANCE INC, THE | | | SCAC4 |
| 51 | NCTY | NORTH COUNTY MOVERS | | | SCAC3 |
