| 1 | IGN | Interguide Air Limited | Callsign: Divine Air, | WAN | AVCODES |
| 2 | IGN | Interguide Air | | | ICAO1 |
| 3 | IGN | International-Great Northern R.R. (Co). | 7/1930-7/1965 & 1/1975-1/1980 | | NAKINA |
| 4 | IGN | International-Great Northern R.R. | 4/38-7/65 & 1/75-1/80 | | NRHS |
| 5 | IGN | UP [MISSOURI PACIFIC] [INTERNATIONAL - GREAT NORTHERN RR] | | | PWRC |
| 6 | IGN | International-Great Northern | | | RSRV |
| 7 | IGN | International-Great Northern R.R. | | USA | TRAFFIC |
| 8 | IGN | IG Nebenbahn Nordhessen e.V | | DE | VKM |
| 9 | IGNI | IGNITION INC | | | SCAC4 |
| 10 | IGNJ | IMAGE ENGINEERING | | | SCAC4 |
| 11 | IGNS | IGNASH TRANSPORTING INCORPORATED | | | SCAC4 |
| 12 | IGNT | IGGYS TRANSPORTATION INC | | | SCAC4 |
| 13 | IGNU | GORO NICKEL S A S | | | SCAC4 |
