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