WHOIS Lookup — Domain Information

Registrar, dates, nameservers, domain status

TL;DR:

WHOIS lookup reveals a domain's registration data: registrar, creation date, expiry date, NS servers, status (ok / clientHold / pendingDelete), and often the owner (unless privacy-enabled). Used for ownership verification, expiry warnings, and domain research.

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Domain RegistrarFind out which registrar registered the domain and where DNS is managed.

Expiration DateCheck domain expiration date to prevent it from expiring and being lost.

Domain StatusWHOIS shows EPP statuses: clientTransferProhibited, serverHold and others.

Owner DataContact details of registrant, admin and tech contacts (when privacy is off).

Why teams trust us

250+

TLDs supported

Expiry

domain expiry date

<3s

result

Alerts

before domain expiry

How it works

Enter domain

WHOIS query to registrar

Registrar, dates & contacts

WHOIS: everything about a domain in seconds

WHOIS lookup reveals the full domain registration history: owner, dates, registrar, nameservers, and status. An essential tool for competitor analysis, legal verification, and expiration monitoring.

Full WHOIS Record

All registrant fields: name, organization, email, phone, address (if not hidden by privacy).

Key Dates

Created, Updated, Expires — exact domain lifecycle dates in one click.

Nameservers

List of NS servers to understand where DNS is hosted and whether CDN is used.

Status & Locks

EPP statuses show whether the domain is protected from transfer, deletion, or changes.

Who uses this

DevOps

domain expiry control

SEO

domain age & history

Security

domain owner verification

Marketers

expiring domain acquisition

Common Mistakes

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Not checking expiration proximityDomains expire automatically. Without monitoring you lose the domain, which may end up with a competitor.

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Taking WHOIS data as ground truthMany registrars offer WHOIS privacy — real owner data may be hidden behind a proxy service.

❌

Ignoring clientTransferProhibited statusWithout this status a domain can be transferred without the owner's knowledge. Enable protection at your registrar.

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Not checking NS after hosting migrationAfter server migration NS records need to be updated. WHOIS will show old values until propagation.

Best Practices

✓

Monitor expiration dateSet up automatic renewal or create a reminder 60 days before domain expiration.

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Enable WHOIS privacyHide personal data through WHOIS Guard or a similar service offered by your registrar.

✓

Check competitorsWHOIS of a competing domain reveals the registrar, domain history, and potential partners.

✓

Cross-check NS with DNS checkerUse DNS check alongside WHOIS for the full picture — NS and the actual zone must match.

Get more with a free account

WHOIS domain expiry monitoring and alerts well before expiration date.

What is WHOIS

WHOIS is a protocol for obtaining registration information about a domain name or IP address. Our tool displays the domain owner, registrar, creation and expiration dates, DNS servers, and domain statuses. WHOIS information is important for verifying site legitimacy, resolving domain disputes, and tracking renewal dates.

WHOIS data is essential for domain investors evaluating purchases, security teams investigating phishing domains, and legal professionals handling trademark disputes. Check domain age, registrar transfer history, and nameserver configuration in one query.

After a WHOIS lookup, verify DNS records to confirm the domain resolves correctly, or check the SSL certificate to ensure it matches the registered domain. For ongoing protection, set up monitoring to get alerts before your domain expires.

Learn more

Alternatives

WhoisXML API Alternatives

Frequently Asked Questions

What is WHOIS?

WHOIS is a protocol for querying domain registration information: owner, registrar, registration and expiry dates, name servers. Data is stored by registrars and available through public queries.

What is WHOIS privacy?

WHOIS privacy hides the domain owner's personal data, replacing it with proxy service data. This protects against spam, fraud, and unwanted contacts. Most registrars offer this service for free.

How to find out when a domain expires?

Enter the domain in our WHOIS tool — it will show the registration expiry date. Also set up domain monitoring in Enterno.io for automatic notifications when the expiry date approaches.

What is the difference between WHOIS and DNS?

WHOIS contains administrative domain information (who owns it, when registered). DNS contains technical routing information (which IP, which mail servers). These are different systems with different data.

What is RDAP and how is it better than WHOIS?

RDAP (Registration Data Access Protocol) is a modern replacement for WHOIS. Advantages: standardized JSON format, internationalization support (IDN), authentication, differentiated access. Gradually replacing WHOIS.

Can you buy an expired domain?

Yes, after expiry a domain goes through a grace period (30-45 days), redemption period (30 days), and then is deleted. After deletion, anyone can register it. Dropcatching services help intercept domains at deletion time.

Related guides

Longer-form reading on this topic from the knowledge base.

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📋 WHOIS Lookup — Domain Information

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