NN was formerly part of the German Empire. In the German Empire, the place was called Raschen.
The place is now called NN and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Raschen | Austro-Hungary | Turnau | before the Treaty of Saint-Germain |
| Rašovka | Austro-Hungary | Turnau | before the Treaty of Saint-Germain |
| Rašovka | Czechoslovakia | Turnov | after the Treaty of Saint-Germain |
| Raschen | German Empire | Reichenberg | 1938 |
| Rašovka | Czechoslovakia | Liberec | 1945 |
| NN | Czechoslovakia | Liberec | 1992 |
| NN | Czech Republic | Liberec | 1993 |