The Do Not Call List is a registry that allows individuals to opt out of receiving unsolicited telemarketing calls. Managed by the Federal Trade Commission (FTC) in the United States, it aims to protect consumers from unwanted phone solicitations. People can add their phone numbers to the list, and telemarketers are required to check the registry before making calls. Once a number is registered, it remains on the list indefinitely, unless the owner removes it. Violating the Do Not Call List can result in penalties for telemarketers. This initiative helps reduce the number of intrusive calls people receive.