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What Is Domain Name?

A Domain Name is an identification string that defines a realm of administrative autonomy, authority or control within the Internet. Domain names are formed by the rules and procedures of the Domain Name System (DNS). Any name registered in the DNS is a domain name. Domain names are used in various networking contexts and for application-specific naming and addressing purposes. In general, a domain name represents an Internet Protocol (IP) resource, such as a personal computer used to access the Internet, a server computer hosting a web site, or the web site itself or any other service communicated via the Internet. In 2017, 330.6 million domain names had been registered.

Domain names are organized in subordinate levels (subdomains) of the DNS root domain, which is nameless. The first-level set of domain names are the top-level domains (TLDs), including the generic top level domains (gTLDs), such as the prominent domains com, info, net, edu, and org, and the country code top-level domains (ccTLDs). Below these top-level domains in the DNS hierarchy are the second-level and third-level domain names that are typically open for reservation by end-users who wish to connect local area networks to the Internet, create other publicly accessible Internet resources or run web sites.

Purpose of Domain Name:

Domain names serve to identify Internet resources, such as computers, networks, and services, with a text-based label that is easier to memorize than the numerical addresses used in the Internet protocols. A domain name may represent entire collections of such resources or individual instances. Individual Internet host computers use domain names as host identifiers, also called host names. The term host name is also used for the leaf labels in the domain name system, usually without further subordinate domain name space. Host names appear as a component in Uniform Resource Locators for Internet resources such as web sites.

Domain Name space:

Today, the Internet Corporation for Assigned Names and Numbers (ICANN) manages the top-level development and architecture of the Internet domain name space. It authorizes domain name registrars, through which domain names may be registered and reassigned. The domain name space consists of a tree of domain names. Each node in the tree holds information associated with the domain name. The tree sub-divides into zones beginning at the DNS root zone.

Domain Extension:

Domain extensions, also known as Top Level Domains or TLDs, are the suffixes or the last part of a domain name - the letters that come after the dot to the right of any domain name. For example, most URL addresses end with .com - this is an example of a domain extension or TLD.

The Most Common Domain Extension:

• .com (commercial): This is the most popular extension that has grown to be synonymous with the internet. It was originally intended for commercial entities, but it is now unrestricted and can be registered for anything.
• .net (network): .net has become an alternative to .com, although it was initially meant for network infrastructure use.
• .org (organization): This is a top-level domain just like .com. Initially, it was for non-profit organizations and charities but it can now be registered by anyone.
• .biz (business): This domain extension is meant for businesses. A lot of preferred domain names were taken up in the .com top-level domain, so .biz was created as an alternative.
• .info (information): This is a top-level domain extension just like a .com. Initially, it is for any kind of information and it can now be registered by anyone.
• .gov (government): This domain extension is restricted to only government entities.
• .mobi (mobile): This is meant for sites that are designed to be viewed on mobile devices.

Top Level Company of Domain:

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