What is Domain Name?
The domain name provide the easily memorizeble names to the
IP
addresses which would otherwise be difficult to remember. For
example it is easy to remember yahoo.com then keeping 127.123.210.100 IP
address in the mind.
The domain name also provide the abstraction to the location of the
website. For example the website abcd.com with IP address
123.232.111.123 is located at Jacksonville, FL but for some reason the
owner have to move their services to the new server with the IP address
121.121.198.220 in Orlando, FL. In this case owner will simply map new
IP address against the domain name abcd.com and whole process will be
completely transperent to the website users.
The domain name is commonly divided into the two parts. The right side
of the domain name (.com in the case of yahoo.com) is called top-level
or first-level domain name. There are limited generic first-level domain
names including .com, .net, .org, .info, .biz. First-level domain names
are created with the approval of the
ICANN. There is also one top-level domain names for each country in
the world including .us for United States, .uk for United Kingdom, .ca
for Canada. Only Europe (.eu) and Asia (.asia) continent have their own
top-level domain names apart from their top-level domain names assigned
to their countries.