Poruba (Ostrava-Poruba) was formerly part of the German Empire. In the German Empire, the place was called Poruba.
The place is now called Poruba (Ostrava-Poruba) and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Poruba | Austro-Hungary | Wagstadt | before the Treaty of Saint-Germain |
| Poruba | Czechoslovakia | Bílovec | after the Treaty of Saint-Germain |
| Poruba | German Empire | Wagstadt | 1938 |
| Poruba | Czechoslovakia | Bílovec | 1945 |
| Poruba (Ostrava-Poruba) | Czechoslovakia | Ostrava-město | 1992 |
| Poruba (Ostrava-Poruba) | Czech Republic | Ostrava-město | 1993 |