| 1 | MSP | Servicio de Vigilancia Aerea Del Ministerio de Seguridad Publica | Callsign: Seguridad, | CR | AVCODES |
| 2 | MSP | Servicio De Viglancia Aerea Del Ministerio De Segu | | | ICAO1 |
| 3 | MSP | Minero Siderurgica de Ponferrada | | E | TRAFFIC |
| 4 | MSPA | MID STATES PORT AUTHORITY | | | PWRC |
| 5 | MSPA | MERCIER, STEPHANE | | | SCAC4 |
| 6 | MSPE | MORAN SHIPPING AGENCIES INC | | | SCAC4 |
| 7 | MSPF | MACH SPEED TRANSPORTATION INC | | | SCAC4 |
| 8 | MSPG | MILLER SPRINGS LTD | | | SCAC4 |
| 9 | MSPJ | MOE & STEVE PARE SALES | | | SCAC4 |
| 10 | MSPL | MARTIN, STEPHEN L | | | SCAC4 |
| 11 | MSPM | MELTEMI SPECIAL MARITIME ENTERPRISE | | | SCAC4 |
| 12 | MSPQ | MESSER TRANSPORT | | | SCAC4 |
| 13 | MSPT | M-SCRAP TRANSPORTATION SERVICES LLC | | | SCAC4 |
| 14 | MSPU | MSC- MEDITERRANEAN SHIPPING COMPANY S.A. | | CH | BIC |
| 15 | MSPV | MASTER PROVISIONS INC | | | SCAC4 |
| 16 | MSPW | MERCURIO, SAMUEL P | | | SCAC4 |
| 17 | MSPX | P4 Production, L.L.C. | added 1/1998; 7/2000-7/2005 | | NAKINA |
| 18 | MSPX | P4 Production, L.L.C. | added 1/98; 7/2000 | | NRHS |
| 19 | MSPX | P4 PRODUCTIONS, LLC | | | PWRC |
| 20 | MSPX | P4 Production | | | RSRV |
| 21 | MSPX | P4 PRODUCTION LLC | | | SCAC4 |
| 22 | MSPY | MONTCLAIR SURPLUS CO | | | SCAC4 |
