How to Find Who Owns a Domain Name
Domain registration data is public, but the registrant’s identity often is not. Look it up with RDAP — the protocol that has replaced WHOIS — through Nominet for .uk domains or the relevant registry for everything else. Expect the registrar, dates and name servers to be visible, and expect an individual registrant’s personal details to be withheld. Registrant and website operator are also not necessarily the same party.
Use RDAP to check domain registration data
RDAP, the Registration Data Access Protocol, is the successor to WHOIS. It returns structured, consistent data and supports proper access controls, which is why registries have been migrating to it and why Nominet is phasing WHOIS out for .uk.
In practice:
- For
.uk,.co.ukand related domains, use Nominet’s own lookup, which is RDAP-backed. - For
.com,.netand other gTLDs, query the registry or registrar RDAP service; ICANN’s lookup will route you correctly. - For country domains outside the UK, the national registry runs its own service, and disclosure rules vary widely.
What registry lookup data can show
Even where the registrant is hidden, a lookup normally returns:
- Whether the domain is registered, and when it was created
- Registration expiry and last-updated dates
- The registrar of record
- Name servers, which usually indicate the hosting or DNS provider
- Domain status codes, including transfer and deletion locks
- For
.uk, whether the registrant has opted out of publication
That is often enough for the real question. Dates establish how long a site has existed; the registrar and name servers give you an abuse contact; status codes reveal a domain lapsing or in dispute.
Why registrant details may be hidden
Two mechanisms hide registrant data, and they are frequently confused.
Data protection. Since GDPR, registries and registrars redact personal data from public output by default. Nominet allows an individual who is not trading from the domain to opt out of having their name and address published — most private registrants do.
Privacy and proxy services. Registrars sell services that substitute their own details for the registrant’s, or hold the registration on the customer’s behalf. The public record then shows the proxy provider.
Neither means the data does not exist. It is held by the registrar and registry and is disclosable through proper channels — a court order, a law-enforcement request, or a registry dispute process.
How .UK domain lookup works
Nominet is the registry for .uk and runs the authoritative lookup. Two things are specific to .uk.
The opt-out applies only to individuals not using the domain for business. An organisation trading from a .uk domain should be identifiable, and a business hiding behind an opt-out is potentially misusing it — something Nominet can be asked to review.
Nominet also operates the Dispute Resolution Service for .uk domains registered or used abusively, which is generally faster and cheaper than litigation.
When to use registrar or company records
If the registrant is hidden and you need to know who is behind a site, the registration record is rarely the best route. Better sources:
- The website itself. A UK business trading online must disclose its identity — company name, registered number and address. Check terms, privacy policy, contact and “about” pages.
- Companies House. Once you have a company name or number, the filings give you directors, PSCs and the group structure.
- Trade mark records. Where the domain matches a brand, the UK IPO register names the rights holder — who may be a different entity from the operator.
- The registrar’s abuse contact. For phishing, fraud or infringement, this is the route that actually produces action.
Privacy and data limitations
Be precise about what a registration record proves. The registrant is whoever holds the registration — which may be an agency, a developer, a holding entity or a former owner who never transferred it. The operator is whoever runs the site. The host is a third party again. A domain can be registered to one party, operated by another and owned commercially by a third.
Registration data also goes stale. Registrants are required to keep details accurate, and many do not.
WhoOwns does not publish personal registrant details for privately held domains. Where we identify who is behind a website, we do it from the site’s own disclosures, company filings and trade mark records — sources that are meant to be public.