Every extension
Official RDAP for gTLDs and modern ccTLDs, with WHOIS fallback for registries that still use it. Arabic and other IDN domains included.
RDAP + WHOIS · 1,200+ extensions
Who owns that domain? Find out in seconds.
Look up registration data for any domain or IP address: registrar, creation and expiry dates, name servers, DNS records and network diagnostics. Free, fast and accurate.
Try
Everything about a domain, in one place
Dates that matter
See when a domain was registered, last changed and when it expires, with a clear timeline.
Live DNS
A, AAAA, MX, NS, SOA and TXT records straight from DNS over HTTPS.
Network tools
Live ping, real-time traceroute and IP information: owner, ASN, country and reverse DNS.
SSL & website checks
Certificate validity and expiry, the full redirect chain, and an A+ to F grade for security headers.
Email security
MX, SPF, DMARC, DNSSEC and MTA-STS checked and explained, so your mail gets delivered and can't be spoofed.
Availability & subdomains
Check whether a name is free in 20 popular extensions at once, and find every subdomain seen in public SSL certificate logs.
Hosting, SEO & blacklists
See who hosts a site and what it's built with, preview how its links look when shared, and check its servers against 16 spam blocklists.
Selling a domain?
Work out the price to ask so you take home exactly what you want after marketplace fees and VAT.
How it works
- 1
Search
Type a domain (or IP address) and press Enter.
- 2
We ask the registry
Domainat queries the authoritative registry and registrar directly, in real time.
- 3
Read the answer
Clean, structured results, with the raw record one tab away.
Frequently asked questions
What is WHOIS?
WHOIS is the public record of who registered a domain, through which registrar, and when it was created and expires. RDAP is its modern, structured successor that registries now use.
Why are some contact details hidden?
Most registrars redact personal data for privacy (GDPR and similar laws). You will often see a contact form link instead, which forwards your message to the registrant.
Why can't I see data for some extensions?
A few country-code registries publish no WHOIS or RDAP data at all, only a website. When that happens Domainat tells you and links to the registry.
Is the domain available?
If no registry record exists, Domainat shows the domain as available. Register it with any accredited registrar before someone else does.
Is Domainat free?
Yes — every lookup and tool is free, with no account needed.
What other tools are there?
SSL certificate, website redirects and security headers, DNS lookup and propagation, email security (SPF, DMARC), IP information, live ping, traceroute and an IDN converter for Arabic domains.