Bulk Domain Checker
Have 50 candidate names? Check them all at once against the official RDAP registry. No signup, no API key, no “register your email to see results” nonsense.
The Bulk Domain Checker queries the official RDAP registry directly (RFC 7480, the modern successor to WHOIS). Up to 50 domains per check, parallel lookups, results in seconds.
Use the “quick expand” row to add common TLD permutations of a base name (.com, .io, .co, .ai, .app, .dev, .xyz, .net). Available domains link straight to Namecheap so you can register without re-entering the name.
A small caveat: some TLDs and registries return ambiguous responses (rate limits, partial data, premium / reserved domains). When we can't classify cleanly, the result is “Unknown” — register the domain to be sure.
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