Pientken was formerly part of the German Empire. In the German Empire, the place was called Blumental.
The place is now called Piętki and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Pientken | German Empire | Lyck | 1926 |
| Blumental | German Empire | Lyck | 1939 |
| Piętki | Under Polish administration | Ełk | 1945 |
| Piętki | Poland | Suwałki | 1992 |