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

# PTR记录

指针

把IP地址映射回主机名的DNS记录，作用与A记录或AAAA记录相反。用于反向查询时，这些记录位于.arpa域名之下，由控制该IP地址的一方设置，而不是由域名持有人设置。邮件服务器常检查这些记录来判断发件方。

## 相关术语

- [.arpa](https://tldlog.com/zh/cihui/arpa/)
- [A记录](https://tldlog.com/zh/cihui/a-jilu/)
- [AAAA记录](https://tldlog.com/zh/cihui/aaaa-jilu/)
- [DNS记录](https://tldlog.com/zh/cihui/dns-jilu/)
- [垃圾邮件](https://tldlog.com/zh/cihui/laji-youjian/)