Unter-Kosli was formerly part of the German Empire. In the German Empire, the place was called Dolní Kožlí.
The place is now called Dolní Kožlí and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Unter-Kožli | Austro-Hungary | Prachatitz | before the Treaty of Saint-Germain |
| Dolní Kožlí | Austro-Hungary | Prachatitz | before the Treaty of Saint-Germain |
| Dolní Kožlí | Czechoslovakia | Prachatice | after the Treaty of Saint-Germain |
| Unter-Kosli | German Empire | Pisek | 1939 |
| Dolní Kožlí | German Empire | Pisek | 1939 |
| Dolní Kožlí | Czechoslovakia | Prachatice | 1945 |
| Dolní Kožlí | Czechoslovakia | Prachatice | 1992 |
| Dolní Kožlí | Czech Republic | Prachatice | 1993 |