---
id: "fqdn"
kind: "glossary-term"
title: "FQDN"
language: "zh-Hans"
category: "DNS与技术基础"
updated: "2026-10-10T12:00:00Z"
canonical: "https://tldlog.com/zh/cihui/fqdn/"
translations:
  en: "https://tldlog.com/glossary/fqdn/"
  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/"
---

# FQDN

完全限定域名

完整写出的域名，包含从主机到顶级域的每一部分，例如www.example.com。严格来说，它以一个代表DNS根的点结尾。它能明确表示所指的是哪个名称。

## 相关术语

- [域名](https://tldlog.com/zh/cihui/yuming/)
- [标签](https://tldlog.com/zh/cihui/biaoqian/)
- [区域顶点](https://tldlog.com/zh/cihui/quyu-dingdian/)
- [子域名](https://tldlog.com/zh/cihui/ziyuming/)
- [根区](https://tldlog.com/zh/cihui/genqu/)