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

# split-horizon DNS

A setup in which the same domain name gives different answers depending on who asks. A company may show internal addresses to its own staff and public ones to everyone else. It is common in corporate networks and is one reason private names can clash with public TLDs.

## related terms

- [resolver](https://tldlog.com/glossary/resolver/)
- [authoritative server](https://tldlog.com/glossary/authoritative-server/)
- [name collision](https://tldlog.com/glossary/name-collision/)
- [special-use domain names](https://tldlog.com/glossary/special-use-domain-names/)
- [DNS record](https://tldlog.com/glossary/dns-record/)