See who a domain is registered with, how old it is and when it expires - with status codes, nameservers and DNSSEC in one card. DNS, SSL, headers and hosting come along for the ride. Checking where a server is? Try the IP Location Checker.
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Looking up example.com
Asking the registry...
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Every registered domain has a public record at its registry.
Here is what you can read from it.
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| Status | What it means |
|---|---|
| ok / active | Normal state, no restrictions. |
| clientTransferProhibited | Registrar lock against transfers - recommended. |
| clientUpdateProhibited | Contacts and nameservers cannot be changed without unlocking. |
| clientHold / serverHold | The domain is switched off and does not resolve. |
| autoRenewPeriod | Recently auto-renewed - a short grace period. |
| redemptionPeriod | Expired and deleted - the owner can still restore it. |
| pendingDelete | Will be released in about five days. |
Codes that start with client are set by the registrar. Codes that start with server are set by the registry.
RDAP is the modern replacement for WHOIS.
It returns structured JSON over HTTPS, so dates, statuses and nameservers arrive clean instead of as free text that differs from registry to registry. ICANN made it the official source for generic domains in 2025.
Many country-code registries still only offer WHOIS on port 43. This tool tries RDAP first and falls back to WHOIS automatically - the Raw data tab shows exactly what the registry sent back.
A WHOIS lookup asks the registry that runs a domain ending (.com, .uk, .de) for the public registration record. It shows the registrar, when the domain was created, when it expires, its status codes and nameservers.
This tool asks over RDAP first - the modern, structured replacement for WHOIS - and falls back to classic WHOIS on port 43 when a registry has no RDAP service.
Since GDPR (2018), registrars hide personal details such as the registrant name, email, phone and address. You usually see "Redacted for privacy" instead.
Companies sometimes still publish their organisation name and country. To reach a hidden owner, use the registrar's contact form or abuse address shown in the result.
Look it up and read the Expires line in the summary - it shows the date and a countdown in days. Most domains renew automatically, so a date that is close does not always mean the domain will drop.
Status redemptionPeriod or pendingDelete means it really has expired.
Probably. It means the registry had no record for that name when we asked. Some names are reserved or premium and still cannot be registered at the normal price.
Always confirm with a registrar before you rely on it.
They are EPP status codes set by the registrar (client...) or the registry (server...). clientTransferProhibited is a lock that stops the domain being moved to another registrar - a good sign.
Codes ending in Hold mean the domain does not resolve. Hover or tap any status chip in the result for a plain-English explanation.
Yes. Enter blog.example.com and the registration data comes from example.com, while DNS and website checks run on the exact name you typed.
International names like münchen.de are converted to punycode (xn--mnchen-3ya.de) automatically.
Besides registration data you get DNS records (A, AAAA, MX, NS, TXT, CAA, SOA), SPF and DMARC, the SSL certificate, the redirect chain, six security headers, detected technologies and hosting details such as IP, location and ISP.
Turn the website or hosting checks off under What to check for a faster, WHOIS-only lookup.
Yes, it is free and needs no account. Results are cached for 15 minutes, and each visitor can run about 30 fresh lookups every 10 minutes to keep the registries happy.
Use Refresh to skip the cache, and export any result as JSON, TXT or CSV.