WHOIS Domain Lookup — Find Domain Owner, Registrar & Expiry
Find out who owns any domain — registrant, registrar, creation and expiration dates, name servers, DNSSEC status. Free, instant, 100+ TLDs supported.
Our WHOIS lookup queries the official registrar database in real time and returns the live registration record for any domain — no caches, no third-party scrapers. Use it to investigate suspicious websites, track when a competitor's domain expires, verify ownership before buying a domain, or find the abuse contact for a phishing report. Supports gTLDs (.com, .net, .org, .io, .ai, .dev), ccTLDs (.uk, .de, .fr, .ru, .cn, .br, .au) and new TLDs introduced after 2014.
WHOIS is a query and response protocol used to obtain information about domain name and IP address registrations. Our free WHOIS lookup tool lets you quickly find:
- Who owns the domain
- When the domain was registered
- When registration expires
- Which registrar manages the domain
- Domain DNS servers
- Contact information (if available)
This information is useful for checking domain availability, researching competitors, verifying website legitimacy, and troubleshooting DNS issues.
WHOIS vs RDAP — what is the difference?
RDAP (Registration Data Access Protocol) is the modern successor to WHOIS, standardised by ICANN in 2015. It returns the same data in structured JSON instead of the legacy free-form text and supports authenticated access tiers, internationalised domain names and signed responses. ICANN-accredited registrars are required to expose RDAP since 2017 — our tool falls back from RDAP to classic port-43 WHOIS automatically, depending on what the TLD supports.
Why is the registrant data hidden?
Since the GDPR entered force in May 2018, most European registrars and many global ones redact personal data of registrants by default. You will see strings like REDACTED FOR PRIVACY or GDPR Masked instead of the contact name and email. The abuse-contact email and the registrar identity stay public — that is the right channel to reach an owner for legal, abuse or DMCA matters. For some country-code TLDs (.de, .fr, .uk) the registrant data is hidden but a contact form on the registrar website is provided as a relay.
How fresh is the data?
Our queries hit the registrar's authoritative WHOIS server in real time, so creation, expiry and status fields reflect the current state of the registry. Some fields (registrant address, phone) may take 24–48 hours to propagate after a transfer — that is a registry-level delay, not a tool-level cache.
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WHOIS Lookup - Domain Information Check
WHOIS Lookup tool for obtaining domain ownership, registration date, and contacts information. Check domains before purchase, identify fraudulent sites, verify domain history.
What WHOIS Shows:
- Registration date and domain age
- Registrar and name servers
- Administrator contacts
- Status and expiration date
How to run a WHOIS Lookup
- Enter the domain — paste the name without https:// or www (ipchecker.pro or site.com).
- Press "Lookup" — the query goes straight to the registrar WHOIS server.
- Read the report — in 1–2 seconds you see owner, registration date, registrar, name servers and expiration.
- Share the result — copy the URL or share to social — hand off to a colleague or client.
Example use cases
Pre-purchase domain check
Find out whether a domain is free, who owns it now and whether it was spammy in the past based on registration date and registrar history.
Spotting fraud sites
A 1-day-old domain with private WHOIS and an obscure registrar is a classic phishing/scam indicator.
Renewing your own domain
Check expiration for your own names — expired domains hit drop lists and can be grabbed by competitors.
Incident response
WHOIS helps find abuse contacts, reach the owner during DDoS or compromise, and file reports with authorities.
Common mistakes & fixes
- Result says "REDACTED FOR PRIVACY"
- Normal for GDPR TLDs (.eu and most .com/.net since 2018) — registrars hide personal data. Abuse email is usually still available.
- WHOIS cannot find the domain
- Make sure you entered a domain, not a URL. Second-level TLDs like co.uk should be queried as a whole (example.co.uk).
- Different services show different data
- Some services cache for hours. Our WHOIS queries registrars in real time — trust the freshest answer.
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