# Create a subdomain

### What is a subdomain? [#](https://thirdwp.com/docs/domains/create-a-subdomain/#0-toc-title) <a href="#id-0-toc-title" id="id-0-toc-title"></a>

A subdomain is a kind of secondary website. A subdomain has its own content but not a new domain name. The initial part of the existing domain is modified to create a subdomain. A subdomain is basically an extension of the existing domain name with its own content.

Technically, a subdomain is a DNS record for the domain hostname. So it is possible for a subdomain to add its own DNS record editor related to the subdomain.

### When to use a subdomain? <a href="#id-1-toc-title" id="id-1-toc-title"></a>

Subdomains are often used to create separate entities from the main domain. Suppose you have a blog for your website; you could add a subdomain named blog for this. For example, the address would then become blog.(websitename).com. You can also use subdomains for mobile versions of a website, blogs, support, and online stores.


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