NN was formerly part of the German Empire. In the German Empire, the place was called Serskilas.
The place is now called Serski Las and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Serskilas | Russian Empire | Sejny | 1914 |
| Las Sierski | Poland | Sejny | 1921 |
| Serskilas | German Empire | Sudauen | 1939 |
| NN | Poland | Suwałki | 1945 |
| Serski Las | Poland | Suwałki | 1992 |