ENUM is a standard adopted by the Internet Engineering Task Force (IETF) that uses the domain name system (DNS) to map telephone numbers to Web addresses or uniform resource locators (URL). The goal of the ENUM standard is to provide a single number to replace the multiple numbers and addresses for an individual's home phone, business phone, fax, cell phone, and e-mail.
The ENUM standard is a joint effort of Telcordia and Verisign. Every toll-free call in the United States depends on Telecordia software. Verisign is the leader in translating over 24 million .com, .net, and .org domain names on the Internet. Verisign is also a leader in Internet security.