Web Sites, Domain Names, And Name Servers (What`s DNS All About?)... - Domain Name Servers...
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Domain Name Servers. A Domain Name Server stores the domain names and associated IP Addresses for a period of time.
This is stored or cached on a server called a Domain Name Server, or DNS server for short. If the time specified for caching a domain name / IP Address relationship has passed the DNS server will remove it from its cache. When a request for an IP Address is made, and the DNS server does not have that address in its cache, the DNS Server will make a request to a set of special servers on the internet that hold the addresses for all the Name Servers and which domain names each one controls. It can then send a request to the name server for that domain to get the IP Address for the domain name and return it to the computer or device making the original request. All Internet Providers have several DNS servers and as you browse the internet your computer is constantly sending requests to these DNS servers to get (or resolve) IP Addresses for the domain names you type in or links you click on.
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