Ostrov was formerly part of the German Empire. In the German Empire, the place was called Ostrov.
The place is now called NN and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Ostrow | Austro-Hungary | Brandeis | before the Treaty of Saint-Germain |
| Ostrov | Austro-Hungary | Brandeis | before the Treaty of Saint-Germain |
| Ostrov | Czechoslovakia | Brandýs nad Labem | after the Treaty of Saint-Germain |
| Ostrow | German Empire | Brandeis an der Elbe | 1939 |
| Ostrov | German Empire | Brandeis an der Elbe | 1939 |
| Ostrov | Czechoslovakia | Brandýs nad Labem | 1945 |
| NN | Czechoslovakia | Praha-východ | 1992 |
| NN | Czech Republic | Praha-východ | 1993 |