Offers registration for consumers to stop telemarketers from calling. (United States, for-profit commercial calls only).

Texas "No Call Lists". Texans may register a telephone number with either of the Public Utility Commission-sponsored "No Call Lists" ...

Californians Against Telephone Solicitation ...

The Telephone Preference Service (TPS) is a free service. It is the official central opt out register on which you can record your preference not to receive ...