Grasgirren was formerly part of the German Empire. In the German Empire, the place was called Dingelau.
The place is now called Borok and belongs to Russian Federation.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Grasgirren | German Empire | Angerapp | 1938 |
| Dingelau | German Empire | Angerapp | 1939 |
| Grasgirren | Under Soviet administration | Kaliningrad | 1945 |
| Borok | Russian Federation | Ozersk | 1992 |