WHOIS Lookup
Look up domain registration information — registrar, dates, nameservers, and status via the RDAP protocol.
Did this tool work for you?
How to use this calculator
- 1
Enter the domain name you want to look up.
- 2
Click "Check Now" to query the RDAP registry.
- 3
Results show the registrar, registration date, expiry date, and nameservers.
- 4
Note: registrant personal details may be hidden by WHOIS privacy protection.
Frequently asked questions
What is a WHOIS lookup?
WHOIS is a query/response protocol for looking up domain registration records. It reveals who registered a domain (or their privacy proxy), which registrar was used, when it was registered and when it expires, and which nameservers it uses.
Why is the registrant information hidden?
GDPR and similar privacy laws led most registrars to offer WHOIS privacy protection (also called domain privacy or proxy registration). Instead of showing the registrant's personal details, the registrar's proxy information is displayed. This is now the default for most new registrations.
What is the difference between a registrar and a registry?
A registry manages a TLD (e.g. Verisign manages .com). A registrar is accredited to sell domain registrations (e.g. GoDaddy, Namecheap, Google Domains). You register domains with a registrar; the registry maintains the authoritative database. RDAP data comes from the registry.
Can I find who owns a domain through WHOIS?
Often no — WHOIS privacy is nearly universal today. However, you can still see the registrar and registration dates. For business-related domains, the organization name may appear even with privacy protection. Some TLD registries disclose more data than others.
WHOIS Lookup — Domain registration records via RDAP
WHOIS vs RDAP
Traditional WHOIS is plain text with inconsistent formatting across registries. RDAP (Registration Data Access Protocol) is the modern standard — it returns structured JSON that's easier to parse and has better support for internationalized domain names (IDNs).
What you can learn from WHOIS
Even with privacy protection, WHOIS data reveals the registrar (useful for identifying domain brokers or managed accounts), registration date (trust signal), expiry date (negotiation leverage for domain acquisition), and nameservers (identifying the hosting/DNS provider).
Learn more from an authoritative source:
MDN Web DocsJSON Formatter & Validator
Format, validate, and minify JSON — with clear error messages for invalid input.
Base64 Encoder / Decoder
Encode plain text to Base64 or decode Base64 strings back to readable text.
URL Encoder / Decoder
Encode special characters in URLs (percent-encoding) or decode percent-encoded URLs.
UUID Generator
Generate UUID v4 (random) identifiers — one or in bulk.
Results are estimates for informational purposes only and do not constitute professional financial, medical, legal, or technical advice. Read full disclaimer →