Ugest was formerly part of the German Empire. In the German Empire, the place was called Bilin *.
The place is now called NN and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Ugest | Austro-Hungary | Dux | before the Treaty of Saint-Germain |
| Újezd | Austro-Hungary | Dux | before the Treaty of Saint-Germain |
| Újezd | Czechoslovakia | Duchcov | after the Treaty of Saint-Germain |
| Ugest | Czechoslovakia | Duchcov | after the Treaty of Saint-Germain |
| Bilin * | German Empire | Bilin | 1938 |
| NN | Czechoslovakia | Bílina | 1945 |
| NN | Czechoslovakia | Teplice | 1992 |
| NN | Czech Republic | Teplice | 1993 |