NN was formerly part of the German Empire. In the German Empire, the place was called Unterhaselbach.
The place is now called Dolenji Leskovec and belongs to Slovenia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Haselbach | Austro-Hungary | Rann/Brežice | before the Treaty of Saint-Germain |
| Dolenji Leskovec | Austro-Hungary | Rann/Brežice | before the Treaty of Saint-Germain |
| Dolenji Leskovec | Yugoslavia | Dravograd | after the Treaty of Saint-Germain |
| Unterhaselbach | German Empire | Rann | 1941 |
| NN | Yugoslavia | Trbovlje | 1945 |
| Dolenji Leskovec | Yugoslavia | Socialistična rep. Slovenija | 1992 |
| Dolenji Leskovec | Slovenia | Slowenien | 1991 |