What is FQDN used for?

FQDN – What does it stand for?

A domain name that specifies its precise location inside the Domain Name System’s tree hierarchy is referred to as a “fully qualified domain name,” or FQDN. It is occasionally also used in conjunction with an absolute domain name. So, it describes each domain level, including the root zone and Тop-Level Domain. It is the most thorough method of composing a specific domain name for a host or machine.


Let’s examine an Fully Qualified Domain Name‘s structure from right to left.

  • The root label, often known as the “root” of the DNS system, is at the top of the hierarchy. Only a period or dot can be used to express it. This dot is no longer necessary to input when using the browser’s search function. The browser will add it.
  • The Top Level Domain is the next level up in the hierarchy. “.com,” “.org,” or “.net,” for instance.”
  • On the following hierarchy level is the Domain. It is the name that the owner, like Google, has chosen.
  • The lowest label contains the hostname (subdomain). For example, it displays several subcategories or services, such as retail or postal.

How to locate the FQDN of your Domain

Understanding what a Fully Qualified Domain Name is and where to find one is crucial when working with domain names. Your site’s full address, comprising the hostname and top-level Domain, is known as its FQDN. It might be helpful for troubleshooting and is used to identify your website on the internet.

Run the command nslookup mhcompendium.com in a terminal window to discover your FQDN. The complete address of your website will be displayed in the result. This command can be used to troubleshoot issues with your website or email service.

Why is FQDN necessary?

The FQDN represents a specific Internet address. It is essential to the internet experience. Think about it as though you were missing your FQDN. It’s as if you don’t have a website that visitors can access.

If you wish to deploy SSL certificates, you will require FQDN. This is so because users expect such a feature on most websites.

You can access domain services, such as email and File Transfer Protocol (FTP), via the FQDN. The FQDN is required if you want to manually link a domain name email to an email program on your device.


Finally, we can state that FQDN is quite helpful. You’ll need an exact, Fully Qualified Domain Name in order to find a host’s location. Computers use it since it is a precise identification for several purposes.

1 thought on “What is FQDN used for?”

Leave a Comment

Your email address will not be published. Required fields are marked *