Lazdenen was formerly part of the German Empire. In the German Empire, the place was called Haselberg (Ostpr.).
The place is now called Krasnoznamensk and belongs to Russian Federation.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Lasdehnen | German Empire | Schloßberg (Ostpr.) | 1938 |
| Haselberg (Ostpr.) | German Empire | Schloßberg (Ostpr.) | 1939 |
| Lazdenen | Under Soviet administration | Kaliningrad | 1945 |
| Krasnoznamensk | Russian Federation | Krasnoznamensk | 1992 |