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

# third-level domain

The part of a domain name two steps to the left of the TLD. In example.co.uk the third level is 'example'. Under some ccTLDs this is the level the public registers. In other names it is just a subdomain the owner creates, such as shop.example.com.

## related terms

- [second-level domain](https://tldlog.com/glossary/second-level-domain/)
- [subdomain](https://tldlog.com/glossary/subdomain/)
- [ccSLD](https://tldlog.com/glossary/ccsld/)
- [ccTLD](https://tldlog.com/glossary/cctld/)
- [TLD](https://tldlog.com/glossary/tld/)