Domain Name System (DNS)

To understand the domain name system, commonly referred to as "DNS," one must first understand what a domain name is. (Visit domain names for more information.) Assuming one comprehends this part of the domain name system, we can further explain the details of this unique Internet system.

Generally, the domain name system is an Internet directory service where domain names are given valid IP addresses. Not only does it translate domain names, but the DNS also manages email delivery of domains as well. Top-level domain registration systems, within the domain name system, include the following:

• .AERO


• .BIZ


• .COM


• .COOP


• .EDU


• .GOV


• .INFO


• .INT


• .MIL


• .MUSEUM


• .NAME


• .NET


• .ORG


• .PRO

Comprised of three main elements, the DNS includes name servers (servers), resource records (DNS data), and other Internet conventions that attain data from multiple servers.

Okay, now that we have a basic understanding of the domain name system, let's elaborate a bit further. Of the DNS, there are billions of resource records that are divided into millions of files. (These files are commonly called "zones." ) These zones are spread all across the Internet under the control of authoritative servers. These servers obtain answers to search queries from DNS data (kept in zones). More specifically, the domain name system is a tracking system that keeps information on all registered domain names across the World Wide Web.

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