Founded in 2010 in Germany, tellows operates an international online community that enables users to find and share information about unknown or suspicious phone numbers. The service's core is the "tellows score," a proprietary algorithm that rates the risk level of a number based on user reports. The company's mission is to create transparency in the telecommunications sector and provide a free, accessible tool for consumers to protect themselves from spam calls, phishing attempts, and phone scams. tellows offers its services through its websites and dedicated mobile applications.

Founded in

Netherlands