| 1 | RFI | National Air Traffic Services Ltd | Callsign: Sherlock, | GB | AVCODES |
| 2 | RFI | National Air Traffic Services | | | ICAO1 |
| 3 | RFI | Rete Ferroviaria Italiana | The owner of the FS railway network. | I | TRAFFIC |
| 4 | RFI | Rete Ferroviaria Italiana | | IT | VKM |
| 5 | RFII | RAJ FREIGHTLINES INC | | | SCAC4 |
| 6 | RFIP | RAFFIELD FISHERIES INC | | | SCAC4 |
| 7 | RFIQ | RITTER FEEDS INC | | | SCAC4 |
| 8 | RFIS | RELIABLE FREIGHT SYSTEMS, INC | | | SCAC3 |
| 9 | RFIS | RELIABLE FREIGHT SYSTEMS INC | | | SCAC4 |
| 10 | RFIU | KUNMING RAILASIA FREIGHT INTERCONTINENTAL CO., LTD. | | PRC | BIC |
