The National Do Not Call Registry, managed by the FTC, is a free service for U.S. residents to opt out of most telemarketing calls. Once registered, telemarketers must refrain from calling unless exempt (e.g., political groups or charities). Registration is permanent unless your number is disconnected or reassigned.​

​The registry protects privacy and reduces telemarketing calls but doesn’t block illegal scam calls. Persistent unwanted calls can be reported on the registry’s website to penalize violators.​

​You can also opt out of prescreened credit and insurance offers through Opt-Out Prescreen. This removes your information from preapproved offer lists for five years or permanently with a written request. Together, these tools reduce unsolicited communications and give consumers more control over their personal information.​

​Learn more here. What To Know About Prescreened Offers for Credit and Insurance | Consumer Advice.