Top-level domain (TLD)

A top-level domain (TLD) is the label at the highest visible level of a domain name, such as .com or .org.

Format
Domains & DNS
Updated
Updated
Glossary Domains & DNS
Top-level domain Also known as TLD.Aliases: domain extension, gTLD, ccTLD.

Definition

A top-level domain (TLD) is the label at the highest visible level of a domain name, such as .com or .org.

How it works

TLDs are delegated from the DNS root and run by registries — Verisign operates .com, country-code TLDs belong to their countries, and hundreds of newer generic extensions round out the field. Each sets its own registration rules, pricing, and policies, which is why some extensions have residency requirements while others are open to anyone.

Example: In example.com, .com is the top-level domain.

Often confused: The TLD is just the extension; your registrable domain is the label you choose plus that extension.

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Sources

Last reviewed 2026-07-19.