Mastung was formerly part of the German Empire. In the German Empire, the place was called Mastung.
The place is now called Mostec and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Mastung | Austro-Hungary | Luditz | before the Treaty of Saint-Germain |
| Mostec | Austro-Hungary | Luditz | before the Treaty of Saint-Germain |
| Mostec | Czechoslovakia | Žlutice | after the Treaty of Saint-Germain |
| Mastung | Czechoslovakia | Žlutice | after the Treaty of Saint-Germain |
| Mastung | German Empire | Luditz | 1938 |
| Mostec | Czechoslovakia | Toužim | 1945 |
| Mostec | Czechoslovakia | Karlovy Vary | 1992 |
| Mostec | Czech Republic | Karlovy Vary | 1993 |