NN was formerly part of the German Empire. In the German Empire, the place was called Flötenau, Kr. Bromberg.
The place is now called NN and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| NN (Flötenau, Kr. Bromberg) | German Empire | Bromberg | before the Versailles Treaty |
| NN | Poland | Bydgoszcz | after the Versailles Treaty |
| Flötenau, Kr. Bromberg | German Empire | Bromberg | 1939 |
| NN | Poland | Bydgoszcz | 1945 |
| NN | Poland | Bydgoszcz | 1992 |