Tiefenort (Ostpr.) was formerly part of the German Empire. In the German Empire, the place was called Tiefenort (Ostpr.).
The place is now called Ručejki and belongs to Russian Federation.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Eszergallen | German Empire | Goldap | 1914 |
| Eschergallen | German Empire | Goldap | 1936 |
| Tiefenort (Ostpr.) | German Empire | Goldap | 1939 |
| Èšergallen | Under Soviet administration | Kaliningrad | 1945 |
| Ručejki | Russian Federation | Ozersk | 1992 |