free tool
Check if a domain is available
Instant RDAP lookup for any TLD. If the name is taken, add it to Vacato — we watch 24/7 and alert you the second it drops.
Results via public RDAP/DNS — not a guarantee of registrability. For continuous monitoring, use Vacato (free · 5 domains · no card).
Common questions
How does the free domain availability checker work?
Vacato queries public RDAP and DNS records to determine whether a domain is currently registered. Results are instant and support hundreds of TLDs including .com, .io, .ai, and .co.
Is a domain checker result a guarantee I can register the name?
No. RDAP shows current registration status, not real-time registry cart availability. For continuous monitoring of taken domains, add them to your Vacato watchlist.
Can I get alerts when a taken domain becomes available?
Yes. If a domain is registered, add it to Vacato (free for 5 domains). We check every 5 minutes on the free plan and alert you via email, push, or Telegram when it opens.