Hostname |top| May 2026

When a hostname is used on the internet, it is usually part of an FQDN. This includes the specific host name, the domain name, and the top-level domain (TLD). For instance, in ://example.com : mail is the hostname . example is the domain . .com is the TLD . Why Hostnames Matter 1. Memorability

Spaces, underscores, and symbols like @ or ! are generally not permitted. hostname

At its simplest, a hostname is a human-readable label assigned to a device connected to a computer network. It serves as a nickname for an IP address, making it much easier for people to identify and connect to specific machines. When a hostname is used on the internet,

You can use letters (a-z), digits (0-9), and hyphens (-). Length: A single label can be up to 63 characters long. example is the domain

On iPhone or Android, this is usually found under the "About Phone" or "Network" section of the settings menu. Rules for Creating Hostnames

IP addresses can change. If a website moves to a different server or a company changes its internet service provider, its IP address might change. However, the hostname can remain the same. By updating the DNS record, the hostname will simply point to the new IP address, and users will never notice a difference. 3. Organization and Security