Rostok bei Pürglitz was formerly part of the German Empire. In the German Empire, the place was called Roztoky u Křivoklátu.
The place is now called Roztoky and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Rostok | Austro-Hungary | Rakonitz | before the Treaty of Saint-Germain |
| Roztoky | Austro-Hungary | Rakonitz | before the Treaty of Saint-Germain |
| Roztoky | Czechoslovakia | Rakovník | after the Treaty of Saint-Germain |
| Rostok bei Pürglitz | German Empire | Rakonitz | 1939 |
| Roztoky u Křivoklátu | German Empire | Rakonitz | 1939 |
| Roztoky | Czechoslovakia | Rakovník | 1945 |
| Roztoky | Czechoslovakia | Rakovník | 1992 |
| Roztoky | Czech Republic | Rakovník | 1993 |