Address of a computer, organization, or other entity on a TCP/IP network such as the Internet. Domain names are typically in a three-level server.organization.type format. The top level denotes the type of organization, such as com (for commercial sites) or edu (for educational sites); the second level is the top level plus the name of the organization (e.g., britannica.com for Encyclopædia Britannica); and the third level identifies a specific host server at the address, such as the www (World Wide Web) host server for www.britannica.com. A domain name is ultimately mapped to an IP address, but two or more domain names can be mapped to the same IP address. A domain name must be unique on the Internet, and must be assigned by a registrar accredited by the Internet Corporation for Assigned Names and Numbers (ICANN). See also URL.
This entry comes from Encyclopædia Britannica Concise.
For the full entry on domain name, visit Britannica.com.
Seen & Heard
What made you look up domain name? Please tell us what you were reading, watching or discussing that led you here.