What Is a Fully Qualified Domain Name (FQDN) with Examples?

Fully Qualified Domain Name (FQDN): Complete Guide With Examples

Fully Qualified Domain Names (FQDNs) are crucial in the vast internet landscape as they provide a complete and unambiguous address for websites and network resources. Understanding what an FQDN is and how it works is essential for webmasters, network administrators, and anyone navigating the digital realm.

If you are curious about these domain names, this article is a must-read. This guide will delve into FQDN meaning and provide illustrative examples to demystify this concept.

Furthermore, if you want to search for domain names or buy Australian Domains, contact Domain Hosting Australia.

Read ahead!

What Are Fully Qualified Domain Names (FQDN)?

Fully Qualified Domain Names (FQDN) are complete and unique domain names that specify the precise location of a specific resource on the internet. It includes both the host and domain names, providing a hierarchical structure that ensures the resource’s accurate identification and location.

  • Pros of FQDN
  1. FQDNs provide a complete and unambiguous identification of resources on the internet, making it easier for computers and servers to locate and access the intended target.
  2. FQDNs support using multiple subdomains, enabling businesses and organisations to create a more organised and scalable website architecture.
  • Cons of FQDN
  1. FQDNs can be lengthy, especially when considering deeply nested subdomains, which may lead to potential typographical errors and increased complexity.
  2. FQDNs rely on the Domain Name System (DNS) for resolution, and any issues or delays with DNS servers can affect the accessibility of the associated resources.

Why is FQDN Required?

FQDNs must ensure that internet resources, such as websites, servers, and network devices, are uniquely identified and can be efficiently located by computers and servers on the internet. FQDNs provide a standardised and hierarchical naming system for various applications and services.

  • FQDN Example


  • “www” is the subdomain.
  • “example” is the second-level domain.
  • “com” is the top-level domain (TLD.
  • These three parts create the Fully Qualified Domain Name (FQDN).

Key Features of FQDN

FeatureWhat Do They Mean?
HostnameThe specific name of a resource within a domain, such as a server or a computer.
Domain NameThe hierarchical name identifies a specific domain, such as example.com.
SubdomainsFQDNs can include multiple subdomains representing various levels within the domain hierarchy.

Benefits of FQDN

BenefitsWhat Do They Mean?
Improved Network NavigationFQDNs make it easier for users and devices to navigate and access resources on the internet with precision.
Organisational StructureFQDNs provide a structured naming system that simplifies resource organisation and management within a network.
Seamless Resource LocationFQDNs and DNS enable seamless resolution of resources’ IP addresses, ensuring smooth and reliable access to services.
ScalabilityWith support for multiple subdomains, FQDNs offer a scalable approach for handling many resources within a domain.


A Fully Qualified Domain Name (FQDN) is a comprehensive and precise identifier for online websites and network resources. Whether you encounter them in web addresses, email configurations, or network setups, understanding FQDNs is essential for efficient communication and navigation in the digital realm.

Leave a Reply