I do not think there is an online site listing all the restricted or danger aeras in France with appropriate frequencies to contact.
However you can order the VFR Folder from transair pilot shop or directly from the French aeronautical information service:
www.sia.aviation-civile.gouv.fr
In this folder you will find VFR radionavigation charts together with a supplement manual listing all the information you need (unlike the ICAO 1/500 000 charts, which do not provide frequencies for RA crossing).
Lastly,you may cross Danger Aeras (without radio contact) in France but it is at your own risk.