“What is internet ?” by code.org
1.What is a web domain?
Ans: Web domains are used to identify IP address of a particular website. Eg: IP address of trackdcode.com is 188.8.131.52. It is difficult for humans to type IP address of each website they wish to visit. Hence, it is mapped to human readable name called as web domain or domain.
It forms the part of URL(Uniform resource locator) or website address.
As per above example the ?.com? refers to purpose of the website i.e