NN was formerly part of the German Empire. In the German Empire, the place was called NN.
The place is now called Nahon and belongs to Austro-Hungary.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Náhon | Austro-Hungary | Königgrätz | before the Treaty of Saint-Germain |
| Náhon | Czechoslovakia | Hradec Králové | after the Treaty of Saint-Germain |
| NN | German Empire | Königgrätz | 1939 |
| NN | Czechoslovakia | Hradec Králové | 1945 |
| NN | Czechoslovakia | Východní Čechy | 1988 |
| Nahon | Austro-Hungary | Königgrätz | before the Treaty of Saint-Germain |