---
id: "subdomain"
kind: "glossary-term"
title: "subdomain"
language: "en"
category: "DNS and technical foundations"
updated: "2026-10-04T14:01:23Z"
canonical: "https://tldlog.com/glossary/subdomain/"
translations:
  es: "https://tldlog.com/es/glosario/subdominio/"
  de: "https://tldlog.com/de/glossar/subdomain/"
  fr: "https://tldlog.com/fr/glossaire/sous-domaine/"
  it: "https://tldlog.com/it/glossario/sottodominio/"
  pt-BR: "https://tldlog.com/pt/glossario/subdominio/"
  ru: "https://tldlog.com/ru/glossariy/poddomen/"
  zh-Hans: "https://tldlog.com/zh/cihui/ziyuming/"
---

# subdomain

A name created under a registered domain, such as shop.example.com under example.com. The domain owner can create subdomains in their own DNS without registering anything new. Registries and registrars are not normally involved in subdomains.

## related terms

- [second-level domain](https://tldlog.com/glossary/second-level-domain/)
- [domain name](https://tldlog.com/glossary/domain-name/)
- [CNAME record](https://tldlog.com/glossary/cname-record/)