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