Free Domain & SSL Expiry Checker
Enter any domain to see when its registration and SSL certificate expire — instantly, and with no signup.
What this tool checks
Every domain has two clocks running quietly in the background, and missing either one causes real problems:
- Domain registration expiry— the date your ownership of the name lapses. We read it from the domain's public RDAP record (the modern replacement for WHOIS), along with the registrar it's managed through.
- SSL certificate expiry — the date the certificate securing your site stops being valid. We read it straight from the live TLS handshake, the same way a browser does.
Both are public information, so you can check any domain — yours or not — without logging in. For a deeper walkthrough of every way to find these dates, see how to check when a domain expires.
Why it matters
An expired domain doesn't just take your website offline — it can be snapped up by someone else the moment it drops, and getting it back can be expensive or impossible. Read more about what happens when a domain expires. An expired SSL certificate is faster to fix but instantly scares visitors away with a browser security warning — here's what happens when an SSL certificate expires.
Checking once is useful. The problem is that expiry dates arrive months or years out, long after you've forgotten about them. That's what DomainChest is for: add a domain once and it watches both dates for you, emailing you well before either lapses.
Frequently asked questions
How does this domain expiry checker work?
It looks up the domain's public registration record over RDAP (the modern successor to WHOIS) to find its expiration date and registrar, and opens a TLS connection to the site to read its SSL certificate's expiry. Both are public data, so no login is required.
Is it free?
Yes. Checking any domain is completely free and needs no account. If you want to be emailed before a domain or certificate expires, you can track it with a free DomainChest account (up to three domains).
Why does a domain show no expiry date?
Some TLDs (country-code domains like .ai or .de, for example) don't publish an expiration date in their public RDAP record. The lookup still works — there's simply no date to show for that domain.
What's the difference between domain expiry and SSL expiry?
Domain expiry is when your registration of the name lapses — miss it and the domain can drop and be re-registered by someone else. SSL expiry is when the certificate that encrypts your site expires — miss it and visitors see a 'Not secure' or 'Your connection is not private' warning. They're separate dates and both matter.
How often should I check?
Manually checking is fine for a one-off, but expiry dates creep up quietly. The reliable approach is to monitor continuously and get an email weeks ahead — which is exactly what DomainChest does automatically once you add a domain.
Related tool: SSL Certificate Checker — focused on certificate expiry, with the SSL date shown first.
Stop checking by hand
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