NN was formerly part of the German Empire. In the German Empire, the place was called NN.
The place is now called Nalžovské Hory and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| NN | Austro-Hungary | Klattau | before the Treaty of Saint-Germain |
| NN | Czechoslovakia | Klatovy | after the Treaty of Saint-Germain |
| NN | German Empire | Klattau | 1939 |
| Nalžovské Hory | Czechoslovakia | Horažďovice | 1945 |
| Nalžovské Hory | Czechoslovakia | Klatovy | 1992 |
| Nalžovské Hory | Czech Republic | Klatovy | 1993 |