Anruf-Info. de is a community-powered telephone number lookup and reporting service that helps people identify unknown or unwanted callers. Its database contains entries submitted by website visitors, including reports about marketing calls, surveys, prize promotions, automated messages, suspected scams, call-back traps, and repeated nuisance calls.

Users can search for a telephone number and review other people’s comments and ratings to assess the caller’s apparent purpose and credibility. They can also submit their own experience to inform the community and help others recognize potentially misleading or unwanted calls. The service offers a rating scale and local information that can help indicate where a call originates.

In addition to reverse lookup, Anruf-Info. de provides guidance on handling nuisance calls, including instructions for blocking numbers on a Fritz!Box router and advice about responding to typical call-center calls. Its area-code and postal-code search tools help users find the city associated with a dialing code or postal code.

The site presents these resources as a free way to investigate calls and share practical information with other users