Failly was formerly part of the German Empire. In the German Empire, the place was called Failen.
The place is now called Failly and belongs to France.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Failly | German Empire | Metz | before the Versailles Treaty |
| Failen | German Empire | Metz | before the Versailles Treaty |
| Failly | France | Moselle | after the Versailles Treaty |
| Failen | German Empire | Metz | 1940 |
| Failly | France | Moselle | 1945 |
| Failly | France | Moselle | 1993 |