butterfly/kb
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
0c8a1097fc
kb/data/developer.mozilla.org/en-US/docs/Glossary/TLD-0.md

12 KiB
Raw Blame History

title chunk source category tags date_saved instance
TLD - Glossary | MDN 1/3 https://developer.mozilla.org/en-US/docs/Glossary/TLD reference web, html, css, javascript, documentation 2026-05-05T05:46:45.313472+00:00 kb-cron

MDN HTML HTML: Markup language

HTML reference

HTML guides

Markup languages

CSS CSS: Styling language

CSS reference

CSS guides

Layout cookbook

JavaScriptJS JavaScript: Scripting language

JS reference

JS guides

Web APIs Web APIs: Programming interfaces

Web API reference

Web API guides

All All web technology

Technologies

Topics

Learn Learn web development

Frontend developer course

Learn HTML

Learn CSS

Learn JavaScript

Tools Discover our tools

About Get to know MDN better

Blog

  1. Glossary
  2. TLD

TLD

A TLD (top-level domain) is the most generic domain in the Internet's hierarchical DNS (domain name system). A TLD is the final component of a domain name, for example, "org" in developer.mozilla.org. ICANN (Internet Corporation for Assigned Names and Numbers) designates organizations to manage each TLD. Depending on how strict an administrating organization might be, TLD often serves as a clue to the purpose, ownership, or nationality of a website. Consider an example Internet address: https://developer.mozilla.org Here org is the TLD; mozilla.org is the second-level domain name; and developer is a subdomain name. All together, these constitute a fully-qualified domain name; the addition of https:// makes this a complete URL. IANA today distinguishes the following groups of top-level domains:

country-code top-level domains (ccTLD)

Two-character domains established for countries or territories. Example: .us for United States.

internationalized country code top-level domains (IDN ccTLD)

ccTLDs in non-Latin character sets (e.g., Arabic or Chinese).

generic top-level domains (gTLD)

Top-level domains with three or more characters.

unsponsored top-level domains

Domains that operate directly under policies established by ICANN processes for the global Internet community, for example "com" and "edu".

sponsored top-level domains (sTLD)

These domains are proposed and sponsored by private organizations that decide whether an applicant is eligible to use the TLD, based on community theme concepts.

infrastructure top-level domain

This group consists of one domain, the Address and Routing Parameter Area (ARPA).

In this article

See also