Qual O Telefone? is a Brazilian business directory designed to help people find company contact details across the country. Its listings are organized by state, city and business category, making it easier to search for businesses and services in major cities and municipalities throughout Brazil. Visitors can look up company phone numbers and addresses, explore customer service channels, search by postal code (CEP), and consult area codes (DDD).

The directory covers locations across all Brazilian states and the Federal District, with city guides ranging from major urban centers such as São Paulo, Rio de Janeiro and Brasília to smaller municipalities. The website also offers a free option for businesses to promote or register their company, helping organizations appear in the directory. With general search tools and location-based browsing, Qual O Telefone? serves as a practical resource for people seeking business contact information and for companies looking to increase their visibility in Brazil