What is a WHOIS lookup?

A WHOIS lookup queries public registration databases to find information about a domain name — including the registrar, creation date, expiry date, nameservers, and registration status.

RDAP (Registration Data Access Protocol) is the modern replacement for the older WHOIS protocol. It returns structured JSON data and is now preferred by most domain registrars and registries.

Why might some fields be missing?

Domain registrars often enable WHOIS privacy protection, which hides the registrant's name, email, and address. Some registrars also restrict the data they publish to RDAP.

How accurate is the expiry date?

The expiry date shown is from the public RDAP record. It reflects the date registered in the registry at the time of lookup. Domains typically have a grace period after expiry before they are released.

Can I look up any top-level domain?

Most generic TLDs (com, net, org, io, etc.) and many country-code TLDs (co.uk, com.au, etc.) support RDAP. A few legacy TLDs may not return results through this tool.

Why is registrant information redacted?

GDPR and many registrar privacy protection services hide personal contact details by default. The registrar information is always visible, but individual registrant names and emails are often replaced with proxy contact details.

How current is WHOIS data?

WHOIS data is typically updated within 24 hours of changes. Newly registered domains may take a few hours to appear.

Does this tool support all domain extensions?

It supports .com, .net, .org, .io, and most country-code TLDs. Some ccTLDs maintain separate WHOIS servers with different data availability.

WHOIS Lookup — Check Domain Registration Data Free Online

Look up WHOIS registration data for any domain. See registrar, creation date, expiry date, nameservers, and registrant status. Free, instant.

Try:

WHOIS data is retrieved from public RDAP servers. Some registrars enable WHOIS privacy, which hides registrant details.

100% Private

No Upload

Instant

What is WHOIS Lookup — Free Domain Registration Info?

A WHOIS lookup retrieves publicly available registration data for any domain name from the global WHOIS database. This includes the domain registrar, registration date, expiry date, nameservers, and registrant contact information (where not redacted by privacy protection). WHOIS data is used by webmasters, SEO professionals, and legal teams to research domain ownership and history.

How to Use WHOIS Lookup — Free Domain Registration Info

1Enter the domain name you want to look up (e.g., example.com).
2Click Lookup to query the WHOIS database.
3Review the registration details: registrar, creation date, expiry date.
4Check the nameservers to see which DNS provider the domain uses.
5Note the registrant contact details if not redacted by privacy protection.

Key Features

Registrar name and IANA ID
Creation, updated, and expiry dates
Nameserver records
Domain status codes
Registrant contact info (where available)

Benefits

Research domain ownership before making a purchase offer
Check your own domain's expiry date to avoid accidental lapses
Verify a domain's registration history for due diligence
Identify the registrar to initiate domain dispute processes

Why Use Irreva for WHOIS Lookup — Free Domain Registration Info?

Research domain ownership before making a purchase offer

Check your own domain's expiry date to avoid accidental lapses

Verify a domain's registration history for due diligence

Runs 100% in your browser — files never leave your device.

No account, no sign-up, no subscription — free forever.

Works on any device: desktop, tablet, or mobile.

Frequently Asked Questions

More Web Tools

Blacklist Checker Bulk Redirect Checker CORS Tester Disposable Email Checker DMARC Checker DMARC Generator