A method for redirecting a communication request sent by a caller terminal to a called terminal, an identifier of the caller terminal being absent from a list of identifiers of caller terminals for which the establishment of a communication with the called terminal is authorized or blocked, referred to as a white list or black list, respectively. The method includes: redirecting the communication request to a redirection terminal associated with the called terminal, distinct from the called terminal; receiving an instruction message, including the identifier of the caller terminal and an instruction relating to the white list or to the black list, depending on the instruction received, adding the identifier of the caller terminal to the white list or to the black list.