Pernharz was formerly part of the German Empire. In the German Empire, the place was called Pernharz.
The place is now called Pernarec and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Pernharz | Austro-Hungary | Mies | before the Treaty of Saint-Germain |
| Pernarce | Austro-Hungary | Mies | before the Treaty of Saint-Germain |
| Pernarec | Czechoslovakia | Stříbro | after the Treaty of Saint-Germain |
| Pernharz | Czechoslovakia | Stříbro | after the Treaty of Saint-Germain |
| Pernharz | German Empire | Mies | 1938 |
| Pernarec | Czechoslovakia | Stříbro | 1945 |
| Pernarec | Czechoslovakia | Plzeň-sever | 1992 |
| Pernarec | Czech Republic | Plzeň-sever | 1993 |