What WHOIS is
WHOIS is a reference system that stores data about domains: registration date, expiry, registrar, and the administrator's contacts. You can run a query through the registrar's website, through coordination-center services, or with our free domain check tool.
For the .ru, .рф, and .su zones, WHOIS follows its own rules, and the set of public fields here differs from international domains. So the same check in different zones can return a different amount of information.
What's visible and what's hidden
Technical details usually stay public: the registrar, domain statuses, registration and expiry dates, and name servers. These make it easy to judge whether a domain is active and when it becomes available.
The owner's personal data, however, is more often hidden. For private individuals, contacts in WHOIS for the Russian zones are not published – you'll only see a note that this is an individual. For organizations, the company name may be shown, but not always the contact details of a specific person.
- visible: registrar, dates, statuses, name servers;
- for an organization: sometimes the legal entity's name;
- for an individual: data is hidden, only a note about the owner type is available;
- almost always hidden: the administrator's phone, email, and address.
Legitimate ways to identify the owner
If WHOIS doesn't reveal contacts, there are still proper ways to reach the administrator – without trying to bypass privacy.
- write through the registrar's contact form – they'll pass the request to the owner;
- check the site on the domain: its legal details, contacts, and the "About" section;
- look at page archives and the domain's history to understand who used it;
- turn to an intermediary who negotiates on their own behalf.
Before any deal, it's worth running a full domain check rather than relying on WHOIS alone. If the domain is registered to a third-party contractor, look separately at the situation with a domain held by a contractor.
When you need this
An owner check is usually needed in three cases: when buying a domain, in a dispute, and when auditing your own assets. In each, what matters is not just seeing the WHOIS line, but understanding who actually controls the domain and whether they have the right to transfer it.
Before a deal, this protects you from buying someone else's or a disputed domain. In a conflict, it helps determine who to direct your claims to. In an audit, it confirms that the company's domains are registered to the company itself, not to a former employee or contractor.