Wustung was formerly part of the German Empire. In the German Empire, the place was called Wustung.
The place is now called Poustka and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Wustung | Austro-Hungary | Friedland (Isergebirge) | before the Treaty of Saint-Germain |
| Wustung | Czechoslovakia | Frýdlant | after the Treaty of Saint-Germain |
| Wustung | German Empire | Friedland (Isergebirge) | 1938 |
| Poustka | Czechoslovakia | Frýdlant | 1945 |
| Poustka | Czechoslovakia | Liberec | 1992 |
| Poustka | Czech Republic | Liberec | 1993 |