Your location:FAQ > Hosting
What is a Subdomain?

Subdomain (also known as third-level domain or sub domain) is part of a main domain name.

In general, a domain name has the following format :,,, etc.
But the format of a subdomain is,,, etc.

Examples: is a sud domain of

Subdomains help to organize information within a website. So a company website may use subdomains to classify the different aspects of its contents such as , and

UNIX professionals who participate are entitled to register or more sub domain functionality, through the Web site management platform (WCP) can be easily added.