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Domain, IP & DNS Lookup

Search WHOIS, RDAP, DNS, IP geolocation and Reverse IP.

Rate-limited to prevent abuse.
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API Reference
  • /api/whois?q=example.com
  • /api/rdap?q=example.com
  • /api/geoip?ip=8.8.8.8
  • /api/reverse-ip?ip=8.8.8.8
  • /api/dns?q=example.com
API documentation →
About WhoisOne

Fast, simple, ad-friendly tool for WHOIS, RDAP, DNS, IP data and Reverse IP lookups.