To find out what the fax number you are being assigned, you need to fax someone first for him to see your fax number. 팩스 Zap 라인의 멋진 점은 팩스를 보내는 사람마다 다른 번호가 부여된다는 것입니다! You can think of it as an anonymous hidden Fax number to protect your privacy.