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