Passon-Reisgen was formerly part of the German Empire. In the German Empire, the place was called Passon-Reisgen.
The place is now called Reizgiai and belongs to Lithuania.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Passon-Reisgen | German Empire | Tilsit | before the Versailles Treaty |
| Reizgiai | Lithuania | Pajėgiai | after the Versailles Treaty |
| Passon-Reisgen | German Empire | Heydekrug | 1939 |
| Rezgiai | Soviet Union | Pagėgiai/Pagegjaj | 1945 |
| Rjazgjaj | Soviet Union | Pagėgiai/Pagegjaj | 1945 |
| Reizgiai | Lithuania | Šilutė | 1992 |