Karlov was formerly part of the German Empire. In the German Empire, the place was called NN.
The place is now called NN and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Karlshof | Austro-Hungary | Rakonitz | before the Treaty of Saint-Germain |
| Karlov | Austro-Hungary | Rakonitz | before the Treaty of Saint-Germain |
| Karlov | Czechoslovakia | Rakovník | after the Treaty of Saint-Germain |
| NN | German Empire | Rakonitz | 1939 |
| NN | Czechoslovakia | Rakovník | 1945 |
| - aufgelassen - | Czechoslovakia | Rakovník | 1992 |
| NN | Czech Republic | Rakovník | 1993 |