CallTo is a reverse phone lookup service for businesses, featured on the Who Called Me website. It helps users search white pages records by phone number to identify who a number belongs to. The service addresses familiar situations, such as receiving a call from an unknown number, a suspected spam call, or a number that is not recognized.

Its business focus is helping organizations respond to missed calls and recover potential opportunities. When companies and their partners operate across different time zones or follow different schedules, important calls can go unanswered. CallTo aims to make it easier for businesses to reconnect by using alternative contact options found through reverse phone lookup.

Companies can request updates to their contact details in CallTo’s online directory by emailing the service, helping customers respond to missed calls through their preferred means. Visitors can also report numbers associated with phone scams or spam by commenting on the relevant number page or contacting CallTo by email