NN (Poljana) was formerly part of the German Empire. In the German Empire, the place was called Bukovska planina.
The place is now called NN and belongs to Slovenia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| NN (Poljana) | Austro-Hungary | Radmannsdorf/Radovljica | before the Treaty of Saint-Germain |
| Poljana | Yugoslavia | Radovljica | after the Treaty of Saint-Germain |
| Bukovska planina | German Empire | Radmannsdorf | 1941 |
| NN | Yugoslavia | Kranj | 1945 |
| NN | Yugoslavia | Socialistična rep. Slovenija | 1992 |
| NN | Slovenia | Slowenien | 1991 |