TLD

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TLD (Top-Level Domain) is the last part of a domain name that appears after the dot. For example, in the domain pro-hosting.biz, the TLD is .biz.

The most well-known and widely used TLDs include:

• .com

• .org

• .net

The first top-level domains were introduced in 1985. Among them were .com, .org, .net, .edu, .gov, and .mil. The .com TLD remains the most popular and recognizable domain zone worldwide.

Types of TLDs

Top-level domains are commonly classified into several categories:

• gTLD (generic Top-Level Domain). Generic TLDs include domains such as .com, .org, .net, .xyz. They can be further divided into: 
  – Thematic (or descriptive) gTLDs, which help indicate the purpose or target audience of a website, for example .auto, .game, .photos; 
  – Brand TLDs, which are delegated for use by specific corporations only, such as .amazon, .google, and others.

• ccTLD (country code Top-Level Domain). Country-code TLDs represent specific countries or territories. Examples include .fr for France, .us for the United States, and .jp for Japan.

• sTLD (sponsored Top-Level Domain). Sponsored TLDs are intended for particular communities or organizations and are managed under specific eligibility rules. Examples include .edu for accredited educational institutions and .gov for U.S. government entities.

How many TLDs exist?

Today, there are more than 1,500 top-level domains in existence. This number includes roughly 1,200 gTLDs, over 310 ccTLDs, and several dozen sTLDs.

Who manages and controls TLDs?

The overall coordination and management of the Domain Name System (DNS), including the TLD registry, is handled by ICANN (Internet Corporation for Assigned Names and Numbers). ICANN is a non-profit organization incorporated in the United States.

Each TLD has its own registry operator responsible for its administration and technical operation. For example:

• .com is managed by Verisign;

• .org is operated by the Public Interest Registry (PIR).

Country-code TLDs are usually administered by organizations designated by the respective national governments. For instance, the .de domain is managed by the non-profit organization DENIC eG in Germany.

In summary, top-level domains are a fundamental part of the internet’s structure, enabling unique addressing for websites and online services. ICANN oversees the DNS at a global level, while individual registry operators ensure the stability, accessibility, and proper functioning of specific TLDs.