What is the WHOIS Lookup?
The WHOIS Lookup tool pulls a domain's public registration record — registrar, registrant (where published), creation and expiry dates, nameservers, DNSSEC status and registry status codes. Enter a domain and it queries RDAP, the IETF's structured, machine-readable replacement for the old WHOIS protocol, and returns the same information WHOIS used to show, formatted as a clean report. If the registrant fields come back empty, that is not a bug: most registries redact personal registrant data by default under GDPR and similar privacy rules, and this page explains exactly what that means for what you can and can't find out about who owns a domain.
RDAP (Registration Data Access Protocol) replaced the free-text WHOIS format for most gTLDs from 2021 onward. Where classic WHOIS returned a differently formatted text blob from every registry, RDAP returns structured JSON with a consistent schema, which is what lets this tool show dates, statuses and contacts in a readable table instead of a wall of inconsistent text.
Why use a free whois lookup?
RDAP, not scraped WHOIS text
Data comes from the registry's own structured RDAP endpoint via rdap.org's bootstrap service, not a scrape of a WHOIS web page that might be out of date or reformatted.
GDPR redaction explained, not hidden
When registrant fields are blank, the report says so explicitly — redacted, not missing — instead of leaving you to guess why the data isn't there.
Registry status codes decoded
Codes like clientTransferProhibited or pendingDelete are translated into plain English next to the raw code, so you don't need a separate lookup to understand them.
Age and expiry at a glance
Creation and expiry dates are shown directly, useful for checking how long a business has held its domain or whether a registration is about to lapse.
Works across gTLDs and most ccTLDs
rdap.org bootstraps to the correct authoritative registry for the domain's TLD automatically — you don't need to know which registry to query.
How do you use the WHOIS Lookup?
- 1
Enter the domain
Type the domain name without "http://" or a path — just the domain itself, e.g. example.com.
- 2
Run the lookup
The tool queries RDAP for that domain's registry record and returns registrar, registrant, dates, nameservers and status codes.
- 3
Check the registrant section
If it shows "Redacted or not published," that is expected for most domains registered by individuals — it reflects the registry's privacy policy, not a failed lookup.
- 4
Review status codes and dates
Status codes tell you whether the domain is locked, active or in a grace period. Expiry date tells you how much runway is left before renewal is required.
How accurate is it?
Results are read directly from the domain's authoritative registry via RDAP at query time — there is no intermediate cache. If a registry doesn't support RDAP (a shrinking minority of ccTLDs), the tool reports that plainly rather than guessing.
- RDAP has fully replaced WHOIS for gTLDs like .com, .net, .org and most new TLDs. Some country-code TLDs (ccTLDs) run their own registry systems and either don't support RDAP yet or publish a reduced data set.
- A "No registration record found" result usually means the domain is available to register — but a very recently registered or very recently expired domain can occasionally return the same message during a transition window.
- DNSSEC status reflects whether the domain's DNSSEC delegation is signed at the registry level, not whether every record in the zone is actually signed correctly.
- Dates are shown in the registry's reported timezone, normally UTC — treat times as approximate if you need second-level precision for a legal or compliance purpose.
What should you know before using it?
Common registry status codes and what they mean:
| Status code | Meaning |
|---|---|
| clientTransferProhibited | Transfers to another registrar are locked by the registrar (normal for most active domains, often on by default). |
| clientDeleteProhibited | Deletion of the domain is locked by the registrar as a safeguard against accidental or malicious deletion. |
| clientUpdateProhibited | Changes to the domain record are locked by the registrar. |
| clientHold / serverHold | The domain will not resolve. Often applied for non-payment, abuse, or a legal/registry action. |
| redemptionPeriod | The domain has expired and entered a grace period where the original owner can still restore it before it becomes available to anyone. |
| pendingDelete | Past the redemption period — the domain will be released and become available for new registration soon. |
| ok | No restrictions currently applied to the domain. |
Which tools relate to the whois lookup?
The whois lookup is one of 18 domain & ip tools on this site. These are the ones most often used alongside it — either because they handle the next step in the same job, or because they answer a question this tool raises.
DNS Records Lookup
WHOIS/RDAP tells you who owns a domain and when it expires; DNS records tell you where its traffic currently goes.
Domain Age Checker
A focused view of just the registration date and computed domain age, useful for a quick trust signal check without the full RDAP report.
SSL Checker
Registration data tells you about the domain itself; the SSL checker tells you whether the certificate securing it is currently valid.
Domain to IP
Once you've confirmed who owns a domain, resolve it to its current IP address to see where it's actually hosted.
When should you use a whois lookup?
The whois lookup queries live public records, so it suits checks where a stale answer would be misleading — during a migration, after a DNS change, or before you commit to a domain. These are the situations people reach for it in most often.
Due diligence before buying a domain
Check expiry date, registrar lock status and registration age before making an offer or bidding in a domain marketplace.
Investigating a suspicious site
A domain registered days ago with redacted registrant details is not proof of anything on its own, but combined with other signals it is a useful data point in a fraud or phishing investigation.
Tracking your own renewal dates
Confirm exactly when a domain you manage is due to expire, rather than relying on a renewal email that could be missed or land in spam.
Verifying a domain transfer
Check that clientTransferProhibited has been removed and the registrar field has updated before assuming a domain transfer is complete.
Frequently asked questions
Why is the registrant information blank?
What is RDAP and how is it different from WHOIS?
Can I find out who really owns a domain?
Why does the lookup say the domain doesn't exist when I know it's registered?
What does clientTransferProhibited mean?
How accurate is the expiry date shown?
Is a WHOIS/RDAP lookup private?
Is the whois lookup safe to use?
This tool sends the domain you enter to our server, which queries the RDAP endpoint for that domain's registry and returns the result. Domain registration data is public information by design — anyone can run this same query — but don't use this to probe internal or non-public hostnames, since the request still leaves your machine and is logged briefly for rate limiting.
Where do these figures come from?
Every method, threshold and standard this page relies on, with a link to the document that defines it. Check them — a tool that will not show its sources is asking you to take its word for it.
- 1Registration Data Access Protocol (RDAP) Query Format
IETF, RFC 7482 · 2015
Supports: The definition of RDAP as the structured query protocol this tool uses in place of classic WHOIS.
- 2JSON Responses for the Registration Data Access Protocol (RDAP)
IETF, RFC 7483 · 2015
Supports: The structured JSON response format that lets registrant, registrar, dates and status codes be shown consistently across registries.
- 3Registration Data Access Protocol (RDAP)
ICANN
Supports: The claim that RDAP has replaced WHOIS for gTLDs from 2021 onward.
- 4EPP Status Codes
ICANN · 2014
Supports: The plain-English meanings given for registry status codes such as clientTransferProhibited, redemptionPeriod and pendingDelete.
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