The logical name assigned to a computer. On the Web, most hosts are named WWW; for example, www.mycompany.com. If a site is composed of several hosts, they might be given different names such as support.mycompany.com and sales.mycompany.com. SUPPORT and SALES are the host names, MYCOMPANY the subdomain name, and COM is the top-level domain name. See HOSTS file, IP address and TLD.
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