Basic Terminology

Domain Name

Domain Name is the way to identify and locate computers connected to the internet. 

Different websites cannot have same domain name. A domain contains two or more components separated by dots. The last portion of the domain name is the top level domain name.


Major categories of top level domain are: 




Commercial entities


Educational institutions


Nonprofit organizations


Network related institutions


Government institutions


International institutions.

Each domain name corresponds to numeric IP.

There are country specific domain names available

  • .in → India
  • .us → United States
  • .jp → Japan
  • .ca → Canada
  • .dk → Denmark

Similarly every country has their specific domain. 


Example of Domain name

  • tutorialsinhand is the domain name of this website and .com is the top level domain.
  • google
  • yahoo
  • bing
  • microsoft


Using the domain name anyone can access your website.

You need to type on web browser 'www.yourdomainname.com' and it will take you to the website.


Every computer connected to the network has unique IP address using which one can access theose computers. But IP address is a series of numbers (logical address) like which is difficult to remember. So each IP is given a domain name which can be easily remembered.


When someone types the domain name then DNS server finds out the IP address of the domain name that you eneted and points you to that website. 

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