DNS
Last updated
Last updated
The Domain Name System (DNS) is a hierarchical and distributed naming system for , services, and other resources in the or other (IP) networks. It associates various information with assigned to each of the associated entities. Most prominently, it translates readily memorized domain names to the numerical needed for locating and identifying computer services and devices with the underlying . The Domain Name System has been an essential component of the functionality of the Internet since 1985.
The Domain Name System delegates the responsibility of assigning domain names and mapping those names to Internet resources by designating for each domain. Network administrators may delegate authority over of their allocated name space to other name servers. This mechanism provides distributed and service and was designed to avoid a single large central database.
The Domain Name System also specifies the technical functionality of the service that is at its core. It defines the DNS protocol, a detailed specification of the data structures and data communication exchanges used in the DNS, as part of the .
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