NN
NN was formerly part of the German Empire. In the German Empire, the place was called Sedan.
The place is now called NN and belongs to Poland.
| Historical place name |
Country |
Administration |
Time |
| Sedan |
German Empire |
Treuburg |
1939 |
| NN |
Under Polish administration |
Olecko |
1945 |
| NN |
Poland |
Suwałki |
1992 |