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Since it is difficult to memorise IP addresses, so for convenience the alphanumeric address is used for naming
the websites. When we type the alphanumeric address in the address bar of the web browser, then, the DNS
translates it into an IP address and requests the web server to locate the specified file on its site.
Some common Top-Level Domains are as follows:
Abbreviations Used to Denote
.com Commercial firms
.edu Universities/Educational firms
.gov Government Bodies/Organisations
.mil Military Organisations
.net ISP’s/Networks
.org Non-Government/Non-Profit Organisations
.co National and Multinational Companies
.int International Organisations
In DNS, codes of countries 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
• IP (Internet Protocol) Address: It is a unique logical address of a device that helps identify a device at the
time of sending and receiving data in a Network. It is made up of numbers or characters. Remembering these
numeric values to access a specific website is a difficult task, so these numbers are given sensible textual names
called web addresses.
Brainy Fact
Symbolics.com was the first registered domain.
80 Touchpad Artificial Intelligence (Ver. 2.0)-IX

