What is a fax number?

A fax number is a unique telephone number assigned to a fax machine or a fax server. It allows the machine to send and receive documents electronically over a telephone line. Essentially, it functions as an address for sending faxes. The typical format is similar to a standard phone number, often including an area code and a local number. Fax numbers are essential for businesses and individuals who need to transmit documents securely and legally, especially when physical signatures or official records are required.