In this topic, we’ll discuss what an FQDN is. To make you understand what we’re talking about, we’ve included some samples.

This article will cover the definition of an FQDN. We’ve also included some easy examples to aid comprehension.

The word “fully qualified domain name” is a bit of a misnomer. It’s essentially a computer’s or host’s full domain name on the Internet. It’s made up of a few different components.

An FQDN is a domain name that completely and uniquely identifies a single host on the Internet. It has this general syntax:


A subdomain may also be used in some instances. We read it from right to left, just like every other domain name.

For example, here’s how we break down the Fully Qualified Domain Name, The first part (‘www’) is the hostname. The second part (Host.) is the domain name. The last part (co.) is the TLD (top-level domain).

The final duration at the end of an FQDN is the last part. Almost every browser, on the other hand, does not require you to join this period; instead, the framework assumes it. You can test this by adding a time to the end of any domain, and you’ll notice that it does not affect the domain’s route.

A Fully Qualified Domain Name can be compared to an address. This address’ purpose is to designate a position within the DNS system. The location of a website, or any other online entity, has its unique identifier and location when using an FQDN.

Fully Qualified Domain Name Examples:

A fully qualified domain name is always written in the same format.

If you use Gmail, you’ve probably seen this one, ‘’.

Or how about ‘’? In this case, the host name is ‘en,’ indicating that the host is available in English.

It’s ironic, but the majority of domain names aren’t technically fully qualified. For example, ‘’ isn’t technically fully qualified because we aren’t certain of the hostname, despite the fact that most browsers assume the hostname is ‘www.’

An FQDN can be divided into four parts.

  • Hostname: www, mail, FTP, store, support, etc.
  • Domain: apple, Microsoft, IBM, Facebook, etc.
  • Top level domain (TLD): .com, .net, .org,, etc.
  • Trailing period: the final period in an FQDN indicates the end of the name, implying the previous string is the TLD.

If some of these components are absent from a domain name, it is referred to as a Partially Qualified Domain Name (PQDN) (PQDN). PQDNs aren’t allowed to be used as hostnames.

In a cPanel setting, not all FQDNs are equally suitable for use as the hostname. Here are a few limitations to keep in mind at all times:

• Choose a hostname that does not begin with www or a number.

• Choose a hostname that does not contain a hyphen (-)

• Choose a hostname that is not already in use by a cPanel account on your server.

• As a hostname, avoid using a possible service subdomain (for example, or

• Choose a socially appropriate hostname. Always keep in mind that hostnames appear in mail headers and a variety of other locations.

• In hostnames, only lowercase, Latin-script letters can be used. 

Hopefully, you now have a clear understanding of what a truly qualified Domain Name is and how to use one. Please visit our website to learn more about our web hosting plans and Cloud servers.’s is a website that provides hosting services in India.

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