DNSTOOLS

DNSTools

WHOIS Lookup

Query domain and IP registration/allocation data via RDAP — ICANN's modern WHOIS replacement

About RDAP

Registration Data Access Protocol (RDAP) is the IETF-standard replacement for WHOIS. It returns structured JSON directly from the authoritative registry — no third-party proxy required.

Press Enter to run. Domains, IPv4/IPv6, and full URLs are accepted (host is extracted automatically).

Quick tests:

WHOIS / RDAP Basics

  • RDAP replaces legacy WHOIS with structured JSON.
  • All gTLDs (.com, .org, .net, etc.) support RDAP.
  • IP lookups return allocation and network ownership metadata.
  • Many ccTLDs also support RDAP (.uk, .fr, .br, .au).
  • Registrant data is mostly redacted under GDPR.
  • DNSSEC signing status is included in the response.
Learn more in Resources

Welcome to DNSTools

Your privacy-focused, client-side DNS, WHOIS & email security toolkit.

100% Client-Side

All queries run directly from your browser — DNS via DoH, WHOIS via RDAP. No backend tracking.

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Comprehensive Toolkit

DNS, WHOIS, email security & threat intelligence — all in one place.

DNS Lookup

WHOIS

MX & DMARC

Headers

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