What is a TLD?
A TLD (top-level domain) is the part after the final dot — .com, .org, .ai, or a country code like .uk. It sits at the top of the DNS hierarchy for that namespace.
1,000+ TLDs · LiveSearch all 1,000+ TLDs · Live availability
Domain extensions list
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Definition
What is a domain extension (TLD)?
A domain extension, or TLD (top-level domain), is the label after the final dot — such as .com, .org, .ai, or a country code like .uk. DomainDiscovery’s extensions browser helps you explore 1,600+ options before you run domain name search and register at a registrar.
What is a TLD? →TLD FAQ
Domain extensions (TLDs) — quick answers
Choose an extension for brand fit and market, then verify availability. Browse 1,600+ options here.
Which extension should I choose?
Prefer .com for global consumer brands when available. Consider .ai, .io, .app, or .dev for category fit. Use a ccTLD when you truly operate in that country and customers expect it.
Does a keyword TLD improve SEO by itself?
No. Helpful content and technical quality matter far more than the extension string. A weak site on a clever TLD still underperforms a strong brand site.
How do I go from browsing to registering?
Shortlist TLDs here, run domain name search for your string, compare prices, then complete checkout at a registrar.