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