---
id: "arpa"
kind: "glossary-term"
title: ".arpa"
language: "zh-Hans"
category: "DNS与技术基础"
updated: "2026-10-10T12:00:00Z"
canonical: "https://tldlog.com/zh/cihui/arpa/"
translations:
  en: "https://tldlog.com/glossary/arpa/"
  es: "https://tldlog.com/es/glosario/arpa/"
  de: "https://tldlog.com/de/glossar/arpa/"
  fr: "https://tldlog.com/fr/glossaire/arpa/"
  it: "https://tldlog.com/it/glossario/arpa/"
  pt-BR: "https://tldlog.com/pt/glossario/arpa/"
  ru: "https://tldlog.com/ru/glossariy/arpa/"
---

# .arpa

仅用于互联网基础设施、而非普通网站的顶级域。其最知名的分支in-addr.arpa和ip6.arpa存放着将IP地址转换回名称的记录。它由IANA与互联网技术社群共同管理。其名称是Address and Routing Parameter Area（地址和路由参数区域）的缩写。

## 相关术语

- [PTR记录](https://tldlog.com/zh/cihui/ptr-jilu/)
- [IANA](https://tldlog.com/zh/cihui/iana/)
- [TLD](https://tldlog.com/zh/cihui/tld/)
- [特殊用途域名](https://tldlog.com/zh/cihui/teshu-yongtu-yuming/)