The Whois tool on Sites.reviews lets you instantly look up public registration data for any domain — who registered it, when it expires, and which name servers it uses. Use it before buying a domain, vetting a business partner, or researching competitors.
How to use the tool
- Type a domain name into the field above — for example, example.com (no http://, no trailing slash).
- Click the "Check" button.
- Within a few seconds you'll see live data pulled from the domain registry.
The tool supports most TLDs: .com, .org, .net, .io, .co, and many country-code extensions. If a registry limits public disclosure (common with some ccTLDs), the tool will display whatever data is publicly available.
What the results show
A successful lookup returns the following fields:
- Registrar — the company where the domain is registered (GoDaddy, Namecheap, REG.RU, etc.).
- Registration date — when the domain was first created. Older domains generally carry more SEO authority.
- Expiration date — when the current registration period ends. Domains expiring soon may become available.
- Domain status — for example, clientTransferProhibited means the domain is locked against unauthorised transfers.
- Name servers (NS) — which DNS provider hosts the zone. These can reveal the hosting provider or CDN in use.
- Registrant info — owner name or organisation, if not hidden behind a privacy proxy.
Frequently asked questions
Why are the owner details hidden?
Most registrars offer WHOIS Privacy Protection, replacing personal contact details with a proxy service. This is standard practice and does not indicate anything suspicious about the domain or its owner.
Why did the tool return no data?
The most common reasons: the domain is not yet registered, the registry for that TLD restricts public access, or the domain was registered very recently and hasn't propagated yet. Try again in a few minutes.
How can I tell whether a competitor's domain is about to expire?
Check the Expiration Date field in the results. If it's within 30 days and the domain hasn't been renewed, it may soon become available. Note the date and monitor it manually or with a backorder service.
Can I find out a site's real hosting provider from Whois?
Whois returns name servers, not the hosting IP. The NS records can identify the DNS provider or CDN, but for the actual server IP you'll need to run a DNS lookup or a dig query separately.
For a deeper dive — what every status code means, how to interpret technical fields, and how to use Whois data for SEO and due diligence — see our complete guide to checking domain Whois.