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Text-based addressing system on the Internet is called Domain Name System (DNS). In this system, each
website has a unique name such as oracle.com, cbse.nic.in, etc.
The last three letters of the web address are known as Top Level Domain (TLD) which provides information
about the root of the domain for the type of organisation to which the address belongs. It is alphabetical and
helps to identify an address in Domain Name System.
Some common Top Level Domains are:
Abbreviations Used To Denote
.com Commercial Firms
.edu Universities/Educational firms
.gov Government Bodies/Organisations
.mil Military Organisations
.net ISP’S/Networks
.org on- overnment/ on-Profit Organisations
.co National & Multinational Companies
.int International Organisations
In DNS, codes of the country can also be included. The code comprises of two letters. Some common codes
of certain countries are:
Code Denotes the Country
.au Australia
.uk United Kingdom
.jp Japan
.fr France
.in India
.us United States of America
.nz New Zealand
Web Servers
Web server is the principal computer or
server that stores the contents of different
websites. It provides data and information
to computers on request which are
connected to it through the network via
the Internet.
In other words, it can be said that it is
a computer that stores data and runs
software that are designed to send web
pages in file format when requested by
web browsers.
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