MaskNet Tools
Check domain registration data
View the registrar, registration and expiration dates, statuses, and DNS servers for a domain.
Some registration data can be hidden by the owner or the registrar. A registration date on its own does not confirm that a site is safe or trustworthy.
What the domain check shows
Registration data: WHOIS and RDAP
WHOIS is a domain's registration record: which registrar holds it, when it was created, until when it is paid for and when the data last changed. Today this information comes through RDAP, the modern replacement for WHOIS. We find the right RDAP server in the official IANA registry and ask the registry of the domain's zone.
The owner's name and contacts are usually hidden: registrars redact them under personal data rules. If a zone has no RDAP service, the tool says so.
How to read the result
- Registration date — when the domain was created. A domain registered a few days ago is a red flag if the site claims to be a well-known company.
- Expiration date — until when the registration is paid. If it isn't renewed, the domain becomes free.
- Statuses — for example,
clientTransferProhibitedblocks a transfer to another registrar without the owner. That is normal protection. - DNS servers — where the domain's records live. They show whose services the site uses: a host, a CDN or its own server.
DNS records
The "DNS records" tab shows A and AAAA records — the site's IP addresses, MX — mail servers, NS — DNS servers, and TXT — service records such as domain ownership proofs and mail rules. Records are queried at the moment of the check over encrypted DNS from Cloudflare and Google, so no Russian resolver is involved and the answer isn't swapped on the way. Why that matters — in DNS substitution.
SSL certificate
The "SSL certificate" tab connects to the site over HTTPS and shows who issued the certificate, when it expires and which domains it covers. An expired certificate, or one issued for another domain, is why browsers warn about an insecure connection.
How to check a site before entering a password or paying
- Compare the domain with the official one character by character: fakes differ by one letter or by the zone.
- Look at the registration date: a well-known shop or bank has had its domain for years.
- Check the certificate: it must be issued for this exact domain and still be valid.
- No check guarantees that a site is honest. It only helps you spot obvious signs of a fake.
Frequently asked questions
Can I find out who owns a domain?+
Usually not: registrars hide the owner's name and contacts. You can see the registrar, dates, statuses and DNS servers.
How is RDAP different from WHOIS?+
RDAP is a newer protocol for the same registration data. It returns the data in a machine-readable form and has replaced the old WHOIS.
Why do DNS records differ from what my computer sees?+
Records are cached for the time the owner sets, so fresh changes take a while to spread. Also, Russian resolvers return different addresses for some domains — we query records through Cloudflare and Google over encrypted DNS.
What does "No RDAP service is available for this domain zone" mean?+
The zone's registry hasn't published an RDAP service in the IANA registry. Look up such a domain on the website of its zone's registry.