Whois: Cách tìm chủ sở hữu bất kỳ tên miền nào

Ever wondered who owns a particular website? Or when a domain was first registered? Whois lookup gives you answers to these questions and more.

What Is Whois?

Whois is a public database storing registration information for every domain name. When someone registers a domain, their details are recorded. Anyone can query it using our free Whois Domain Lookup tool.

What Does Whois Show?

Registrar: Where the domain was registered (GoDaddy, Namecheap, Cloudflare, etc.).

Registration date: When first registered. Check domain age for SEO insights.

Expiration date: When renewal is needed. Expired domains become available to register.

Nameservers: Which DNS servers control the domain.

Registrant contact: Owner details (when not privacy-protected).

Domain status: Active, locked, pending transfer, etc.

Whois Privacy and GDPR

Since GDPR (2018), many registrars automatically redact personal information. You may see a privacy proxy instead of the real owner. This is normal and not limited to EU domains.

SEO Uses for Whois

Assess domain age: Older domains tend to have stronger authority. Use our Domain Age Checker.

Evaluate link partners: Check legitimacy before pursuing backlinks. Verify Domain Authority too.

Research competitors: See their registrar, hosting via Hosting Checker, and registration timeline.

Find expired domains: Domains nearing expiration can be valuable acquisitions.

Frequently Asked Questions

Is Whois lookup legal?

Yes. Whois data is publicly available by design. Using it for spam may violate terms of service.

Why is owner information hidden?

Domain privacy protection replaces personal details with a proxy service. Common after GDPR.

Can I find who owns any website?

You can retrieve available data, but privacy-protected domains will show proxy details instead of personal info.

Does domain age affect SEO?

Not directly, but older domains typically have stronger backlink profiles and trust signals.

Look up any domain with our free Whois Domain Lookup, then check Domain Age and Domain Authority.