What is domain and everything about domain.

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Hi guys.
Today we are going to talk about domain.
Obviously most of us know what domain is.But there are still some new learners who wants to know about domain.This is for the new learners.I will try to explain it in a simple way.So let's get started.
What is domain?
Domain name is like an address or a name.Suppose you have a office and it is somewhere in the world of course.So if someone wants to visit your office he will simply go to the address of your office.Domain name is just like this you have a website and the address of the website is domain.

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  It was the basic knowledge of domain now i am going to give you some more and clear knowledge of domain.
Domain name explanation.
Everything in the internet are on the servers and every single website is in a different place of the server.We can reach there using their ip address.IP addresses are like 10.243.005.003
But it is impossible to remember ever ip address of websites.So the solution for this is domain name.
It is easy to remember domain name then  remembering ip addresses.
Where can i buy domain?
ICANN owns all the domain of the internet.
But if you want to buy domain names then you can contact domain sellers like godaddy,namecheap,bluehost etc.There are many different types of domain and the prices are different as well.I hope i have succeeded to taught you about domains.
Is you want to know more about domain you can go to Wikipedia .