FQDN

FQDN (Fully Qualified Domain Name) refers to a complete domain name that specifies its exact location within the DNS hierarchy. It includes the hostname and all higher-level domains, up to the root domain, and provides a unique address for a specific resource on the internet or a network.

Example

mail.support.example.com

Breakdown:

• mail: Hostname or subdomain indicating a specific service.

• support: Third-level domain specifying a section or function.

• example: Second-level domain representing the main domain name.

• .com: Top-Level Domain (TLD) indicating the type or category of the domain.