---
id: "fqdn"
kind: "glossary-term"
title: "FQDN"
language: "en"
category: "DNS and technical foundations"
updated: "2026-10-04T14:01:23Z"
canonical: "https://tldlog.com/glossary/fqdn/"
translations:
  es: "https://tldlog.com/es/glosario/fqdn/"
  de: "https://tldlog.com/de/glossar/fqdn/"
  fr: "https://tldlog.com/fr/glossaire/fqdn/"
  it: "https://tldlog.com/it/glossario/fqdn/"
  pt-BR: "https://tldlog.com/pt/glossario/fqdn/"
  ru: "https://tldlog.com/ru/glossariy/fqdn/"
  zh-Hans: "https://tldlog.com/zh/cihui/fqdn/"
---

# FQDN

Fully Qualified Domain Name

A domain name written out in full, with every part from the host up to the top-level domain, such as www.example.com. Strictly it ends with a dot that stands for the DNS root. It leaves no doubt about which name is meant.

## related terms

- [domain name](https://tldlog.com/glossary/domain-name/)
- [label](https://tldlog.com/glossary/label/)
- [apex domain](https://tldlog.com/glossary/apex-domain/)
- [subdomain](https://tldlog.com/glossary/subdomain/)
- [root zone](https://tldlog.com/glossary/root-zone/)