Stablacken was formerly part of the German Empire. In the German Empire, the place was called Bergental *.
The place is now called Trudovoe and belongs to Russian Federation.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Stablacken | German Empire | Insterburg | 1914 |
| Bergental * | German Empire | Insterburg | 1939 |
| Štabljaken | Under Soviet administration | Kaliningrad | 1945 |
| Trudovoe | Russian Federation | Černjahovsk | 1992 |