WHOIS
WHOIS shows a domain's registrar, registration and expiry dates and, where permitted, its owner.
Why it matters
Finding the registrar and host of a smear or fake site is the first step of a removal request.
Privacy
Since the GDPR most records hide the owner, but the registrar and abuse contact stay visible.
Frequently asked questions
Can a redacted owner be revealed?
Through a reasoned request to the registrar or a court order.