March 27, 2023
What is a Top-Level Domain? (TLD) Step-By-Step Explanation
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Richard Wu
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The word "top-level domain" (TLD) refers to the last component of a domain name that comes after the final dot in the digital realm. The ".com" element of the domain name "," for example, is the TLD.


A top-level domain is one of the most significant components of a domain name system since it identifies the organisation or entity that controls the domain name.

A domain name is a unique identifier for a website generally composed of two or more elements separated by dots.

The "second-level domain" (SLD) is the name chosen by the website's owner and is the initial component of a domain name.

The TLD is the second domain name element used to indicate the sort of company or entity that owns the domain.

Types of Top-Level Domains

Various top-level domains are classed depending on the type of organization or body that may register them.

Types of top level domains.webp

The primary types of top-level domains are as follows:

Generic Top-Level Domains (gTLD)

The most prevalent form of TLD is generic top-level domains (gTLDs), which are not tied to any specific geographic region or organization. gTLDs are typically connected with a specific type of website, such as commercial, educational, or government sites.

.com (commercial), .org (organisation), .net (network), .edu (education), .gov (government), .mil (military), .info (information), and .biz are some examples of gTLDs (business).

Generic-Restricted Top-Level Domains (grTLD)

Generic-restricted top-level domains (grTLDs) are similar to gTLDs in that they are only available to a limited number of registrants.

For example, .pro is a generic top-level domain (gTLD) reserved for licenced medical practitioners, attorneys, and accountants.

Sponsored Top-Level Domains (sTLD)

Sponsored top-level domains (sTLDs) are controlled by private organisations and are designed to be helpful to a specific community or industry.

Conclusions intended to provide certain registrants with a more focused and authoritative internet presence.

sTLDs include .aero (aviation), .coop (cooperatives), .museum (museums), and .travel (travel industry).

Country-Code Top-Level Domains (ccTLD)

Country-code Top-level domains (ccTLDs) are given to specific nations or territories and are used to identify websites based in those countries or territories.

The ISO 3166-1 alpha-2 country codes are used to create ccTLDs, which are generally two letters long.

ccTLDs include .us (United States), .ca (Canada), .uk (United Kingdom), .jp (Japan), .cn (China), .au (Australia) and many more.

country code tope level domains.webp

Test Top-Level Domains (tTLD)

Test top-level domains (tTLDs) are used for testing and are not intended for general use. They are typically used by businesses and people creating or testing new domain name systems.

Infrastructure Top-Level Domain

The infrastructure top-level domain (ARPA), such as the Domain Name System (DNS), is used for Internet infrastructure administration.

The Internet Assigned Numbers Authority (IANA) manages ARPA, which is not intended for public use.

Do Top-Level Domains Affect SEO?

Although it is not a primary element, the TLD you choose might affect your website's SEO. In general, search engines do not favour any one TLD and handle all TLDs equally.

Nonetheless, there are a few considerations to ponder while selecting a TLD for SEO purposes.

Do Top-Level Domains Affect SEO.webp

Select a TLD appropriate to your website's content and intended audience. For example, if you want to target a specific country, you should choose a ccTLD for that country. This tells search engines that your site is relevant to people in that country.

Second, you should avoid using hyphens in your domain name. Search engines may consider hyphens spam, which might affect the trustworthiness of your website.

Also, exact match domains (EMDs), domain names that match a particular keyword or phrase, should be avoided. EMDs have already been attacked by search engines and are no longer a viable SEO approach.

Lastly, selecting a TLD that is simple to remember and type is critical. This will make it easier for users to locate your website and boost your website's click-through rate (CTR) on search engine results pages (SERPs).

Choose the Best TLD for Your Website and Your Users

When selecting a TLD for your website, it is critical to evaluate both the content of your website and your target audience.

If you want to target a specific country or region, you should generally select a ccTLD for that country.

This will assist search engines in understanding that your website is relevant to people in that nation or area, and it may also increase your website's visibility in local search results.

Choose the Best TLD for Your Website and Your Users.webp

If you want to reach a worldwide audience, a generic top-level domain (gTLD) like .com, .net, or .org is typically a wise choice.

These TLDs are well-known, reliable, and not tied to any specific geographic area or organisation.

If you belong to a specific business or group, an sTLD like .aero, .coop, or .museum may be suitable.

These TLDs serve a specific community or sector and can help your company establish a more focused and authoritative online presence.

List of Top-Level Domains by Popularity

The following is a list of the top-level domains by popularity based on the number of registered domain names as of March 2023:

  1. .com - 154.6 Million
  2. .net - 12.2 Million
  3. .org - 10.5 Million
  4. .info - 4.8 Million
  5. .biz - 2.3 Million
  6. .us - 2.2 Million
  7. .online - 2.1 Million
  8. .xyz - 1.8 Million
  9. .top - 1.5 Million
  10. .club - 1.4 million

List of Top-Level Domains by Popularity.webp


Top-level domains (TLDs) are essential to the domain name system since they help identify the sort of company or institution that controls a domain name.

TLDs are classified into generic top-level domains (gTLDs), the country-code top-level domains (ccTLDs), sponsored top-level domains (sTLDs), and test top-level domains (tTLDs).

While the choice of TLD may have little influence on search engine optimisation (SEO), selecting a TLD that is appropriate to your website's content and target audience is critical.

This will assist in increasing the exposure of your website in search results and develop trust and credibility with your audience.

When selecting a TLD, keep in mind the availability of the domain name you desire and any restrictions or criteria that may apply to the TLD you select.

Certain TLDs may have unique qualifying restrictions, such as membership in a given business or group or physical presence in a specified nation or region.

Generally, the kind of business or body that owns the domain, the target audience for the website, and the availability of the desired domain name should all be considered when selecting a TLD.

By selecting the appropriate TLD, you can establish a powerful and memorable online presence that is relevant and authoritative to your target audience.