NN was formerly part of the German Empire. In the German Empire, the place was called Krupná.
The place is now called NN and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Krupna | Austro-Hungary | Hořowitz | before the Treaty of Saint-Germain |
| Krupná | Austro-Hungary | Hořowitz | before the Treaty of Saint-Germain |
| Krupná | Czechoslovakia | Hořovice | after the Treaty of Saint-Germain |
| Krupna | German Empire | Beraun | 1939 |
| Krupná | German Empire | Beraun | 1939 |
| Krupná | Czechoslovakia | Beroun | 1945 |
| - aufgelassen - | Czechoslovakia | Beroun | 1992 |
| NN | Czech Republic | Beroun | 1993 |