donotcall.gov

DonOtcAll.gov offers a phone number registration services to stop sales calls

DoNotCall.gov is the U.S. federal government's National Do Not Call Registry, operated by the FTC, where consumers can register their phone numbers to reduce unwanted telemarketing calls. It serves residential and mobile phone users across the United States who want to limit unsolicited sales calls. The site is a .gov domain, confirming it is an official U.S. government resource rather than a commercial service.