NN was formerly part of the German Empire. In the German Empire, the place was called NN.
The place is now called Kaczyny-Stacja (Ostrołęka-Kacz.-St.) and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kaczyny Stacja | Russian Empire | Ostrolenka | 1914 |
| Kaczyny-Stacja | Poland | Ostrołęka | 1919 |
| NN | German Empire | Scharfenwiese | 1939 |
| NN | Poland | Ostrołęka | 1945 |
| Kaczyny-Stacja (Ostrołęka-Kacz.-St.) | Poland | Ostrołęka | 1992 |