| 1 | SEF | Aero Servicios Ejecutivas Del Pacifico, S.A. de C.V. | Callsign: Servipacifico, | MEX | AVCODES |
| 2 | SEF | Aero Servicios Ejecutivas Del Pacifico | | | ICAO1 |
| 3 | SEFA | SCANDIA FOOD PRODUCTS | | | SCAC4 |
| 4 | SEFB | SPEED E FURNITURE DELIVERY | | | SCAC4 |
| 5 | SEFC | SEACOAST TRANSPORTATION LLC | | | SCAC4 |
| 6 | SEFE | SOUTHEAST FARMERS ELEVATOR COOP | | | SCAC4 |
| 7 | SEFEPA | Servicios Ferroviarios Patagónico | Ferrocarriles Patagónicos -> Roca division of Ferrocarriles Argentinos -> Servicios Ferroviarios Patagónico. Popular name: Tren Patagónico. | RA | TRAFFIC |
| 8 | SEFG | SENECA FREIGHT LINES INC | | | SCAC4 |
| 9 | SEFI | SEVEN EIGHT FIVE THREE EIGHT ZERO S | | | SCAC4 |
| 10 | SEFL | SOUTHEASTERN FREIGHT LINES, INC | | | SCAC1 |
| 11 | SEFL | SOUTHEASTERN FREIGHT LINES | | | SCAC4 |
| 12 | SEFM | SECORD FARMS LLC | | | SCAC4 |
| 13 | SEFN | SEAFREIGHT LINE | | | SCAC1 |
| 14 | SEFN | SEAFREIGHT LINE LTD | | | SCAC4 |
| 15 | SEFO | SOUTH EAST LOGGING LTD | | | SCAC4 |
| 16 | SEFP | SOUTH EAST FUEL TRANSPORT CORP | | | SCAC4 |
| 17 | SEFQ | SEAFLET INC | | | SCAC4 |
| 18 | SEFR | SEFAR PRINTING SOLUTIONS | | | SCAC4 |
| 19 | SEFS | SEFEROGLU SHIPPING AND TRADING COMP | | | SCAC4 |
| 20 | SEFT | Società Esercizio Ferroviario Turistico | | CH | TRAFFIC |
| 21 | SEFTA | Societa` Emiliana Ferrovie Tranvie Automobili Modena | | I | TRAFFIC |
| 22 | SEFU | CROWLEY CARIBBEAN SERVICES LLC | | USA | BIC |
| 23 | SEFU | Seafreight Line | | | RSRV |
| 24 | SEFU | SEAFREIGHT LINE LTD | | | SCAC4 |
| 25 | SEFV | SEA FREIGHT | | | SCAC4 |
| 26 | SEFW | SEDLACEK, FRANK W INC | | | SCAC4 |
| 27 | SEFX | North American Rails Leasing Corp. | added 1/1999; 7/2000; eliminated 1/2002; 7/2005 (not listed) | | NAKINA |
| 28 | SEFX | North American Rails Leasing Corp. | added 1/99; 7/2000 | | NRHS |
| 29 | SEFX | NORTH AMERICAN RAILS LEASING COPORATION | | | PWRC |
| 30 | SEFX | North American Rails Leasing Corporation | | | RSRV |
| 31 | SEFY | S E FREIGHT SYSTEMS INC | | | SCAC4 |
