Article R732-2 of the French Code governing the entry and residence of foreign nationals and the right of asylum
The administrative authority competent to assign a foreign national to residence pursuant to 1°, 2°, 3°, 4°, 5° or 6° of article L. 731-3 or article L. 731-4 is the prefect of the département where the place of assigned residence is located and, in Paris, the police prefect.