Ober-Zassau was formerly part of the German Empire. In the German Empire, the place was called Ober Zassau.
The place is now abandoned and the area belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Ober-Zassau | Austro-Hungary | Prachatitz | before the Treaty of Saint-Germain |
| Horní Zasov | Austro-Hungary | Prachatitz | before the Treaty of Saint-Germain |
| Horní Cazov | Czechoslovakia | Prachatice | after the Treaty of Saint-Germain |
| Ober-Zassau | Czechoslovakia | Prachatice | after the Treaty of Saint-Germain |
| Ober Zassau | German Empire | Prachatitz | 1938 |
| Horní Cazov | Czechoslovakia | Prachatice | 1945 |
| - aufgelassen - | Czechoslovakia | Prachatice | 1992 |
| - aufgelassen - | Czech Republic | Prachatice | 1993 |