Blešno was formerly part of the German Empire. In the German Empire, the place was called Blešno.
The place is now called Blešno and belongs to Czechoslovakia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Bleschno | Austro-Hungary | Königgrätz | before the Treaty of Saint-Germain |
| Blešno | Austro-Hungary | Königgrätz | before the Treaty of Saint-Germain |
| Blešno | Czechoslovakia | Hradec Králové | after the Treaty of Saint-Germain |
| Bleschno | German Empire | Königgrätz | 1939 |
| Blešno | German Empire | Königgrätz | 1939 |
| Blešno | Czechoslovakia | Hradec Králové | 1945 |
| Blešno | Czechoslovakia | Východní Čechy | 1992 |