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