a caller identification apparatus , in order to make , with higher precision , a sharp distinction between a call from a fraud and a call from a person who is not a fraud , comprises a storage means and a voice characteristic analysis means . the storage means stores both a white list with which first voice characteristic information , which is the voice characteristic information of closely related persons of a call recipient , is registered and a black list with which second voice characteristic information , which is the voice characteristic information of frauds , is registered . the voice characteristic analysis means acquires the voice data of a call , obtains third voice characteristic information , which is the voice characteristic information of the voice data , and determines whether the third voice characteristic information matches the first voice characteristic information or the second voice characteristic information . if the third voice characteristic information matches neither the first voice characteristic information nor the second voice characteristic information , the voice characteristic analysis means determines whether the third voice characteristic information includes the voice characteristic information of any multiple persons . if the third voice characteristic information includes the voice characteristic information of any multiple persons , the voice characteristic analysis means obtains a first determination result that the call is probably a call from said frauds .