Zielasken was formerly part of the German Empire. In the German Empire, the place was called Schelasken.
The place is now called Żelazki and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Zielasken | German Empire | Lyck | 1938 |
| Schelasken | German Empire | Lyck | 1939 |
| Żelazki | Under Polish administration | Ełk | 1945 |
| Żelazki | Poland | Suwałki | 1992 |