Nieder-Aastrup was formerly part of the German Empire. In the German Empire, the place was called Nieder-Aastrup.
The place is now called Neder Åstrup (Haderslev-Neder Åstrup) and belongs to Denmark.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Nieder-Aastrup | German Empire | Hadersleben | before the Versailles Treaty |
| Neder-Aastrup | Denmark | Haderslev | after the Versailles Treaty |
| Neder Åstrup (Haderslev-Neder Åstrup) | Denmark | Sønderjylland | 1993 |