WHOIS Lookup

What is a WHOIS lookup?

Every registered domain has a public record kept by its registry: when it was registered, when it expires, which registrar manages it, which nameservers it uses and which locks protect it. A WHOIS lookup shows you that record. Domain investors use it to research names before buying, website owners use it to check their own domains, and security teams use it to trace suspicious sites.

WHOIS and RDAP: what is the difference?

WHOIS is the original system, running since the 1980s. It returns plain text, and every registry formats it differently. RDAP is its modern replacement: the same information, but structured, consistent and served over secure connections. Since 2025, RDAP is the official source for generic extensions like .com, .net and .org.

This tool asks for the RDAP record first. If a registry does not offer RDAP yet, which is still the case for some country extensions, it falls back to classic WHOIS automatically. Either way, the Source line in your results tells you which one answered, and you can open the full raw record.

Why the owner’s name is usually hidden

Privacy laws such as the EU’s GDPR mean registries and registrars no longer publish personal details like the owner’s name, email and address for most domains. Seeing “redacted for privacy” or no owner at all is normal and does not mean anything is wrong. Some companies choose to show their organization name, and a few country registries still publish more.

How to contact a domain’s owner

• Visit the website. If the domain shows a “for sale” page, it usually has a contact form or a buy-now price.
• Use the registrar’s contact form. Most registrars offer a form that forwards your message to the owner without revealing their email. Look for it on the registrar website shown in your results.
• Use a broker. Domain marketplaces and brokers can approach the owner for you, which works well for valuable names.

Before you make an offer, find out what the name is worth. A domain appraisal gives you a value range and every reason behind it, so you do not overpay or insult the owner with a lowball.

Reading your WHOIS results

• Registrar: the company that manages the registration, with its official ID and abuse contact.
• Dates: when the domain was registered, when it expires and when the record last changed. For age alone, the Domain Age Checker can check up to 10 domains at once.
• Nameservers: the servers that answer for the domain. They often reveal where it is hosted, or that it is parked at a marketplace.
• DNSSEC: whether the domain’s DNS is cryptographically signed, which protects visitors from being redirected to fake servers.
• Status: locks such as “client transfer prohibited”. Each one is explained in plain English next to it.

Questions

Is this WHOIS lookup free?

Yes. No account is needed. There is a daily limit per visitor to keep automated scrapers away.

How up to date is the information?

It comes live from the registry, and we keep a copy for a few hours so repeat lookups are instant. Changes like a renewal or a transfer can take a little while to appear.

The lookup says the domain is not registered. Can I buy it?

Probably, at any registrar. Double-check there, because some names are reserved by the registry or sold at premium prices even though no one owns them yet.

Can I use WHOIS data for marketing?

No. Registry terms forbid using WHOIS data for unsolicited marketing or bulk collection. Use it to research domains and to contact owners about a specific domain.