NN was formerly part of the German Empire. In the German Empire, the place was called NN.
The place is now called NN and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Slichow | Austro-Hungary | Smichow | before the Treaty of Saint-Germain |
| Zlíchov | Austro-Hungary | Smichow | before the Treaty of Saint-Germain |
| Zlíchov | Czechoslovakia | Praha, Hlavní město/Prag | after the Treaty of Saint-Germain |
| NN | German Empire | Prag, Hauptstadt | 1939 |
| NN | Czechoslovakia | Praha, Hlavní město | 1945 |
| NN | Czechoslovakia | Praha, Hlavní město | 1992 |
| NN | Czech Republic | Praha-město | 1993 |