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What is a TLD and how do you choose a domain extension?

TLD (Top-Level Domain): what it is, what it's for, and how it relates to domains and DNS within a hosting service.

Glossary

Quick summary

  • What it is: A TLD (Top-Level Domain) is the rightmost part of a domain name in an Internet address: the final extension.
  • What it's for: it helps connect the domain with the website, email and other associated services.
  • When to check it: when changing DNS servers, connecting a domain, configuring email or reviewing propagation.

A TLD (Top-Level Domain) is the rightmost part of a domain name in an Internet address: the final extension. For example, in mycompany.com, the TLD is .com. TLDs indicate the domain's purpose or its geographic location.

Types of TLD

  • gTLD (Generic Top-Level Domains): Generic TLDs not tied to a country. Include the classics .com, .org, .net, .info and the newer .xyz, .online, .tech, among many others.
  • ccTLD (Country Code Top-Level Domains): Two-letter TLDs specific to a country, based on ISO 3166-1 codes. For example, .es for Spain, .uk for the United Kingdom, .de for Germany. They usually have specific rules about who can register domains under that TLD.
  • sTLD (Sponsored Top-Level Domains): TLDs sponsored by specific organizations for particular communities. For example, .edu for educational institutions, .gov for the US government, .aero for the aerospace industry.

Importance of choosing the right TLD

  • Recognition and marketing: .com is universally recognized and the first choice for commercial businesses. A local TLD like .es strengthens presence in the Spanish market.
  • SEO: ccTLDs can positively influence local positioning; .es tends to rank better in searches from Spain.
  • Restrictions: Some TLDs have specific requirements; for example, registering .edu requires being an accredited educational institution in the US.

When will you encounter it?

TLD appears when registering or buying a domain, when comparing available extensions for your website, and in articles about online presence strategy and local SEO. You will also see it in DNS configurations when specifying records for domains with different extensions.

Why it matters in hosting

Understanding this concept will help you make better decisions when managing your service. In practice, it relates to the connection between the domain, the website, email and other associated services. If it appears in a guide, the control panel or a support response, review the context before making changes.

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