| File Extension: | DTN |
| File Type Description: | TunnelCAD Import Or Export File |
| File Type Developer: | IQSoft |
| Primary Associated Software: | Tunnel CAD |
| Primary Software Developer: | IQSoft |
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Primarily, a DTN file extension is a type of TunnelCAD Import Or Export File file developed for the Tunnel CAD software program by IQSoft. Annoymous user data statistics infer that DTN files are most popular in United States and with those using Windows 10 devices. In most cases, these users are surfing the internet using the Google Chrome browser.
 | Tunnel CAD by IQSoft |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .MOD | Open Source | Audio Files | Amiga Music Module File |
| .TOP | KTH Royal Institute of Technology | Data Files | Gromacs Topology File |
| .E2 | DPT Corp | CAD Files | Thinkdesign CAD Document |
| .OLB | Microsoft Corporation | Uncommon Files | OLE Object Library |
| .SDK | Autodesk, Inc. | CAD Files | AutoSketch Drawing |
| .STD | Oracle Corporation | Vector Image Files | Apache OpenOffice Drawing Template |
| .D2D | Unknown Developer | CAD Files | 3D Fassade Plus CAD Data |
| .T3001 | Ing.-Büro Friedrich | CAD Files | TARGET 3001! Circuit Design Project File |
| .JOB | Metamation | CAD Files | MetaCAM Nest Job File |
| .DAB | Epigon Media Technologies | Audio Files | Digital Audio Broadcasting Audio Data |
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