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