---
id: "second-level-domain"
kind: "glossary-term"
title: "second-level domain"
language: "en"
category: "TLD types and programs"
updated: "2026-10-04T14:01:23Z"
canonical: "https://tldlog.com/glossary/second-level-domain/"
translations:
  es: "https://tldlog.com/es/glosario/dominio-segundo-nivel/"
  de: "https://tldlog.com/de/glossar/second-level-domain/"
  fr: "https://tldlog.com/fr/glossaire/domaine-second-niveau/"
  it: "https://tldlog.com/it/glossario/dominio-secondo-livello/"
  pt-BR: "https://tldlog.com/pt/glossario/dominio-segundo-nivel/"
  ru: "https://tldlog.com/ru/glossariy/domen-vtorogo-urovnya/"
  zh-Hans: "https://tldlog.com/zh/cihui/erjiyu/"
---

# second-level domain

The part of a domain name just to the left of the TLD, such as example in example.com. It is usually what people register and pay for. Some ccTLDs use fixed second levels, such as .co.uk, so names are registered one level lower.

## related terms

- [TLD](https://tldlog.com/glossary/tld/)
- [domain name](https://tldlog.com/glossary/domain-name/)
- [subdomain](https://tldlog.com/glossary/subdomain/)