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