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DevelopmentDNS Lookup

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DNS Lookup

Check domain availability across .com, .se, .app, .io, .dev, and .ai.

Enter a domain name above to check availability across all TLDs.

How it works

Queries are sent to Cloudflare's DNS-over-HTTPS API, which works uniformly across all TLDs.

NXDOMAIN (the name doesn't exist in DNS) means the domain is available. NOERROR means it's registered.

All six TLDs are checked in parallel so results arrive together.

If the DNS query fails for any reason, that TLD shows Unknown.

Tips

You can type the full domain (e.g. foo.com) — the TLD will be stripped and all six TLDs will still be checked.

Availability shown here reflects RDAP data; always confirm with a registrar before purchasing.

Results may take a few seconds as registries vary in response speed.