Aich (Karlsbad-Aich) was formerly part of the German Empire. In the German Empire, the place was called Aich (Karlsbad-Aich).
The place is now called Doubí (Karlovy Vary-Doubí) and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Aich | Austro-Hungary | Karlsbad | before the Treaty of Saint-Germain |
| Doubí | Austro-Hungary | Karlsbad | before the Treaty of Saint-Germain |
| Doubí | Czechoslovakia | Karlovy Vary | after the Treaty of Saint-Germain |
| Aich | Czechoslovakia | Karlovy Vary | after the Treaty of Saint-Germain |
| Aich (Karlsbad-Aich) | German Empire | Karlsbad (St.Kr.) | 1938 |
| Doubí (Karlovy Vary-Doubí) | Czechoslovakia | Karlovy Vary | 1945 |
| Doubí (Karlovy Vary-Doubí) | Czechoslovakia | Karlovy Vary | 1992 |
| Doubí (Karlovy Vary-Doubí) | Czech Republic | Karlovy Vary | 1993 |