What is Sub-domain?

A subdomain is a subdivision or extension of a main domain (also called a root domain) that acts as an independent part of the main website. Subdomains are created to organize content or sections of a website separately without needing a new domain name.

Structure of a Subdomain:

• A subdomain is placed before the main domain in a URL and is separated by a dot (e.g., subdomain.example.com).
• The structure looks like this:
  subdomain.main-domain.extension

Uses of Subdomains:

1. Organizing Website Sections:
   • For example, a blog can be hosted on blog.example.com while the main site remains at example.com.
2. Localized Versions of a Website:
   • us.example.com for the US audience and uk.example.com for the UK audience.
3. Testing or Development:
   • dev.example.com can be used for testing updates before applying them to the live website.
4. Separate Services:
   • Hosting an online store on shop.example.com while keeping the main site separate.

Examples of Subdomains:

• blog.example.com: A blog section of a main website.
• support.example.com: A customer support portal.
• shop.example.com: An online store.
• mail.google.com: The Gmail service as a subdomain of Google.

In short, subdomains help create distinct sections within a website while remaining part of the main domain.

Also Check:

• What is a domain name?
• What is TLD?