Unter-Kappel was formerly part of the German Empire. In the German Empire, the place was called Unterkappel.
The place is now called Spodnja Kapla and belongs to Slovenia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Unter-Kappel | Austro-Hungary | Leibnitz/Lipnica | before the Treaty of Saint-Germain |
| Spodnja Kapla | Austro-Hungary | Leibnitz/Lipnica | before the Treaty of Saint-Germain |
| Spodnja Kapla | Yugoslavia | Dravograd | after the Treaty of Saint-Germain |
| Unterkappel | German Empire | Marburg an der Drau | 1941 |
| Spodnja Kapla | Yugoslavia | Maribor | 1945 |
| Spodnja Kapla | Yugoslavia | Socialistična rep. Slovenija | 1992 |
| Spodnja Kapla | Slovenia | Slowenien | 1991 |