---
id: "onion"
kind: "glossary-term"
title: ".onion"
language: "zh-Hans"
category: "替代命名系统"
updated: "2026-10-10T12:00:00Z"
canonical: "https://tldlog.com/zh/cihui/onion/"
translations:
  en: "https://tldlog.com/glossary/onion/"
  es: "https://tldlog.com/es/glosario/onion/"
  de: "https://tldlog.com/de/glossar/onion/"
  fr: "https://tldlog.com/fr/glossaire/onion/"
  it: "https://tldlog.com/it/glossario/onion/"
  pt-BR: "https://tldlog.com/pt/glossario/onion/"
  ru: "https://tldlog.com/ru/glossariy/onion/"
---

# .onion

Tor网络内部服务使用的后缀，Tor网络可以隐藏服务的托管位置。IETF于2015年将其保留为特殊用途名称，因此它从不在DNS中查询，也不属于DNS根。只有Tor软件才能访问这些地址。

## 相关术语

- [.alt](https://tldlog.com/zh/cihui/alt-tld/)
- [命名空间](https://tldlog.com/zh/cihui/mingming-kongjian/)
- [根区](https://tldlog.com/zh/cihui/genqu/)
- [名称冲突](https://tldlog.com/zh/cihui/mingcheng-chongtu/)
- [IETF](https://tldlog.com/zh/cihui/ietf/)