Can Whoscall provide information about unknown numbers? Gogolook Service September 10, 2020 07:27 An unknown number is impossible to trace or reveal through any app or device. Related articles Does Whoscall identify SMS as well? How to activate the "Caller Identification" function? What features does the Whoscall Premium version have? How to activate the “blocking” function? Can Whoscall block Unknown numbers? Comments 0 comments Article is closed for comments.