Haasznen was formerly part of the German Empire. In the German Empire, the place was called Haschnen.
The place is now called Łaźne and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Haasznen | German Empire | Treuburg | 1914 |
| Haaschnen | German Empire | Treuburg | 1936 |
| Haschnen | German Empire | Treuburg | 1939 |
| Łaźne | Under Polish administration | Olecko | 1945 |
| Łaźne | Poland | Suwałki | 1992 |