Don't have an account? Sign up
If you're already signed up, please sign in
A hostname is the name of a specific device, server, or service in a network. In the context of domain names, a hostname is often part of a Fully Qualified Domain Name (FQDN). For example, in mail.nic.ua, the word mail is the hostname.
In simple terms, a hostname helps distinguish one server or service from another within the same domain: for example, www for a website, mail for email, or api for an API. Hostnames are used in DNS, server configuration, email services, SSL certificates, and network applications.
A hostname is the name of a specific host (server, device, or service) in a network. For example, in mail.example.com, the word mail is the hostname.
A domain is the main name (for example, example.com), while a hostname is the name of a specific node within that domain (for example, www, mail, or api). Together, they can form an FQDN such as api.example.com.
Hostnames are used in DNS records, web and mail server settings, SSL/TLS certificates, internal networks, cloud services, and applications — anywhere a specific host or service must be identified.