Unter-Reichenau was formerly part of the German Empire. In the German Empire, the place was called Unter Reichenau.
The place is now called Dolní Rychnov and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Unter-Reichenau | Austro-Hungary | Falkenau a. d. Eger | before the Treaty of Saint-Germain |
| Dolní Rychnov | Austro-Hungary | Falkenau a. d. Eger | before the Treaty of Saint-Germain |
| Dolní Rychnov | Czechoslovakia | Falknov nad Ohří | after the Treaty of Saint-Germain |
| Unter-Reichenau | Czechoslovakia | Falknov nad Ohří | after the Treaty of Saint-Germain |
| Unter Reichenau | German Empire | Falkenau a. d. Eger | 1938 |
| Dolní Rychnov | Czechoslovakia | Sokolov nad Ohří | 1945 |
| Dolní Rychnov | Czechoslovakia | Sokolov | 1992 |
| Dolní Rychnov | Czech Republic | Sokolov | 1993 |