domain name
noun
°(computing) a unique, case-insensitive, name, consisting of a string made up of alphanumeric characters and dashes separated by periods, that the Domain Name System maps to IP numbers and other information.
"RFC 822, P. Mockapetris, November 1983: This RFC introduces domain style names, their use for ARPA Internet mail and host address support, and the protocols and servers used to implement domain name facilities."
°an identifier of a computer or site on the Internet.
synonyms: domain, hostname, subdomain