phone blacklist

A **phone blacklist** is a database or list used to identify and block phone numbers that are associated with spam, fraud, telemarketing, or other unwanted calls. When a number is added to a phone blacklist, calls or messages from that number are typically automatically rejected or flagged to protect users from nuisance or malicious communication. This tag is useful for posts related to call blocking, phone security, anti-spam measures, and managing unwanted contacts.