Rongstock was formerly part of the German Empire. In the German Empire, the place was called Rongstock.
The place is now called Roztoky and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Rongstock | Austro-Hungary | Tetschen | before the Treaty of Saint-Germain |
| Roztoky | Austro-Hungary | Tetschen | before the Treaty of Saint-Germain |
| Roztoky | Czechoslovakia | Děčín | after the Treaty of Saint-Germain |
| Rongstock | Czechoslovakia | Děčín | after the Treaty of Saint-Germain |
| Rongstock | German Empire | Tetschen | 1938 |
| Roztoky | Czechoslovakia | Děčín | 1945 |
| Roztoky | Czechoslovakia | Ústí nad Labem | 1992 |
| Roztoky | Czech Republic | Ústí nad Labem | 1993 |