DOMAINNAMESYSTEM
Domain Name System
The Domain Name System is a hierarchical distributed naming system for computers, services, or any resource connected to the Internet or a private network. It associates various information with domain names assigned to each of the participating entities. Most prominently, it translates easily memorized domain names to the numerical IP addresses needed for the purpose of locating computer services and devices worldwide. By providing a worldwide, distributed keyword-based redirection service, the Domain Name System is an essential component of the functionality of the Internet.The above text is a snippet from Wikipedia: Domain Name System
and as such is available under the Creative Commons Attribution/Share-Alike License.