NN was formerly part of the German Empire. In the German Empire, the place was called Erlbachtal.
The place is now called NN and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Zwecka | German Empire | Lauban | 1937 |
| Erlbachtal | German Empire | Lauban | 1939 |
| Świechów | Under Polish administration | Lubań | 1945 |
| NN | Poland | Jelenia Góra | 1992 |