A communication terminal accepts a communication start request for starting communication with a counterpart terminal indicated by counterpart information, through one of a first acceptance unit and a second acceptance unit. The communication terminal stores the counterpart information of the counterpart terminal in a first memory as log data, when the communication start request is accepted through the first acceptance unit, and prevents the counterpart information of the counterpart terminal from being stored in the first memory as log data, when the communication start request is accepted through the second acceptance unit.