Unter-Plesau was formerly part of the German Empire. In the German Empire, the place was called Unter Plesau.
The place is now called Dolní Plezom and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Unter-Plesau | Austro-Hungary | Mies | before the Treaty of Saint-Germain |
| Dolní Plezomy | Austro-Hungary | Mies | before the Treaty of Saint-Germain |
| Dolní Plezom | Czechoslovakia | Stříbro | after the Treaty of Saint-Germain |
| Unter-Plesau | Czechoslovakia | Stříbro | after the Treaty of Saint-Germain |
| Unter Plesau | German Empire | Mies | 1938 |
| Dolní Plezom | Czechoslovakia | Stříbro | 1945 |
| Dolní Plezom | Czechoslovakia | Tachov | 1992 |
| Dolní Plezom | Czech Republic | Tachov | 1993 |