Domain Name Checker
Check domain name availability across 26 popular extensions — .com, .io, .ai, .dev, and more — all at once, for free.
Checks 26 popular extensions at once using live WHOIS/RDAP lookups — no name is stored.
Frequently Asked Questions
How does this check domain availability?
Our server runs a live WHOIS lookup (or RDAP for extensions that no longer support classic WHOIS) against the actual domain registry for each extension and reports whether a registration record exists.
Which extensions can I check?
26 popular ones at once: .com, .net, .org, .io, .co, .ai, .dev, .app, .xyz, .me, .info, .biz, .us, .tv, .cc, .gg, .sh, .to, .club, .online, .site, .tech, .store, .blog, .name, and .live.
Why does a domain sometimes show "Unknown"?
A registry occasionally doesn't respond within our lookup window — click through to confirm manually with a registrar in that case.
Is my search saved anywhere?
No — the name you check is only used to query each registry in real time and isn't logged or stored.
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