Local / National / Toll-Free Numbers in France
LOA (Local address from the same city as the number to be ported & RIO / SIRET required). Download LOA here
RIO code is a code that you should have with the current carrier.
Each number is identified by its unique RIO (Carrier Identity Number). You can dial '3179' to retrieve the RIO of your line.
If your current carrier does not allow you to call special numbers, please reach out to the current carrier to retrieve this
SIRET code is an identification of any French business.
Both codes are specific requirements for porting numbers in France.