Incoming Call Blocker w/ Blacklist/Whitelist - Blocks "Unknown" Numbers, Wildcards
This device was designed to block ringing of incoming calls that you do not want to answer. In Black list mode, this incoming phone blocker will block undesirable incoming calls from up to 120 specific telephone numbers or entire area codes. In White list mode, it will only ring your phone(s) when specific phone(s) numbers or area codes call you.