ICANN (Internet Corporation for Assigned Names and Numbers) is a nonprofit corporation charged with managing the assignment of domain names and addresses. Established in 1998 to assume responsibilities formerly held by the U.S. government, ICANN oversees the allocation of domain names, IP addresses, port assignments, and more. ICANN also accredits domain name registrars and mediates disputes surrounding domain name "squatting" and other Internet-related issues. Learn more on the ICANN web site.

ICANN requires that all domain owners associate their domains with current registrant, administrative, and technical contact information. Yahoo! is required to keep this data on file. Learn more.