domain - technical definition

  1. Sphere of influence.
  2. In the Internet Domain Name System (DNS), the rightmost portion of the address, the domain identifies the type of entity owning or sponsoring the address. The several types of Top Level Domains (TLDs) include generic Top Level Domains (gTLDs) and country codes. If a country code is used in the address, the gTLD becomes a secondary domain. See also country code, DNS, gTLD, Internet, secondary domain, and TLD.

See domain in Computer


(1) In a LAN, a subnetwork made up of a group of clients and servers under the control of one security database. Dividing LANs into domains improves performance and security.

(2) In a communications network, all resources under the control of a single computer system.

(3) On the Internet, a registration category. See domain name and Internet domain name.

(4) In database management, all possible values contained in a particular field for every record in the file.

(5) A group of end points (phones or gateways) in a SIP telephony environment. See SIP.

(6) In magnetic storage devices, a group of molecules that makes up one bit.

(7) In a hierarchy, a named group that has control over the groups under it, which may be domains themselves.



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