WHOIS Lookup
Look up domain registration, ownership, and expiry information.
What Is a WHOIS Lookup?
WHOIS is a query protocol used to retrieve registration information about domain names. It reveals the registrar, registration and expiry dates, nameservers, and domain status flags.
What WHOIS Reveals
Common Use Cases
- Domain expiry monitoring — check when a domain is set to expire before it lapses and becomes available for others to register.
- Ownership verification — confirm who legally owns a domain before a business transaction or dispute.
- Competitive research — check when a competitor's domain was registered or last transferred.
- Fraud investigation — look up registration details of a suspicious domain as part of a broader investigation.
Example
A domain showing an expiry date 20 days away with no auto-renew indicated is at real risk of lapsing — worth flagging immediately if it's a domain you or your business depends on.
Frequently Asked Questions
Why don't I see the owner's name or contact info?
Most registrars now offer WHOIS privacy protection by default, which masks personal registrant details behind the registrar's own proxy contact information.
What happens if a domain expires?
It typically enters a grace period, then a redemption period with extra fees to reclaim it, and finally becomes publicly available for anyone to register.
What do nameservers in WHOIS tell me?
They show which DNS provider is managing the domain's records, which can indicate the hosting setup even before doing a full DNS lookup.
Can WHOIS data be inaccurate?
Yes — registrants aren't always required to keep information current, and some registrars cache WHOIS data, so it may lag behind recent changes.