All processing happens locally in your browser. RDAP queries go to public RDAP servers only.
Enter base names without TLD (e.g., “example” not “example.com”)
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About RDAP Lookups
This tool uses the Registration Data Access Protocol (RDAP), the modern successor to WHOIS, to check domain availability.
A domain is considered available if the RDAP server returns a 404 (not found) response. A domain is taken if the server returns registration data.
Some ccTLDs (country-code TLDs) may not have full RDAP support, which can result in errors or false positives. Results should be verified with the respective registrar.
Queries are sent to rdap.org, a public RDAP bootstrap service that routes requests to the correct RDAP server for each TLD.