Dittau was formerly part of the German Empire. In the German Empire, the place was called Dittau.
The place is now called Osinovka and belongs to Russian Federation.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Uszballen | German Empire | Insterburg | 1914 |
| Uschballen | German Empire | Insterburg | 1936 |
| Dittau | German Empire | Insterburg | 1939 |
| Ušballen | Under Soviet administration | Kaliningrad | 1945 |
| Osinovka | Russian Federation | Černjahovsk | 1992 |