WHOIS Lookup — Free & Instant

About this tool. Who registered this domain, through which registrar, and when does it expire? We use RDAP — the modern, structured successor to WHOIS — so results are consistent and machine-verified rather than scraped text.

Ten signals decide whether your mail arrives. You just checked one.

An expiry date or a hold status takes a whole domain down, mail included, and it is the first thing worth ruling out when everything stops at once.

SPF, DKIM, DMARC, MX and blocklist status, graded A to F in one pass
Every problem written out in plain English, with the record to publish
Saved under Reports, so you can re-run it and see what changed
One domain watched against the blocklists daily

Run the full checkup free

No card, and nothing to cancel.

How to read your WHOIS results

WHOIS shows a domain's registration date, expiry, registrar and status flags, pulled live from the registry.
Watch the expiry date and the status codes. A clientHold status means the domain is not resolving.

Common problems and how to fix them

Domain suddenly stopped working

Check the expiry date and status here. An expired domain or a hold status takes the whole domain offline until renewed or resolved.

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Common questions.

What is WHOIS?

A public directory of domain registration details: when it was registered, when it expires, and who the registrar is.

Why is contact info hidden?

Most registrars apply privacy protection, replacing personal details with a proxy, which is normal and expected.