| Identifier: | DMDUP |
| NAS ID: | DMDUP |
| Name: | DMDUP |
| Fix Type: | Civilian |
| Fix Use: | |
| State: | MONTANA |
| ICAO Region: | K1 |
| Latitude: | 46-28-00.160N (46.466700) |
| Longitude: | 111-39-12.910W (-111.653600) |
| Magnetic Variance: | 11.6 E as of 9/30/2025 |
| High ARTCC Area: | ZLC |
| Low ARTCC Area: | ZLC |
| Published: | Yes |
| Charts: | |
| Pitch: | No |
| Catch: | No |
| SUA ATCAA: | No |
| IAP |