Can Whoscall block the phone call starting with certain numbers? Gogolook Service September 10, 2020 07:25 Whoscall is unable to block the phone numbers begin with a certain number due to the restriction of the iOS system. Related articles Why would I receive calls from numbers that I had already blocked? How can I block specific phone numbers (i.e. unknown numbers, international phone numbers...)? Can I block or report numbers through the pop-up dialog? How to activate Quick Search widget? What features does Whoscall Premium offer? Comments 0 comments Article is closed for comments.