Domain WHOIS & Expiry Checker

What WHOIS data tells you about a domain

Every registered domain has a public WHOIS record that shows who registered it, which registrar holds it, and when the registration expires. The expiry date is the critical one — if a domain lapses, the website goes offline, email stops working, and the domain can be picked up by anyone. Unlike SSL certificates, which browsers warn about loudly, an expired domain just disappears. No error page, no redirect — the DNS records simply stop resolving.

This checker pulls the registrar, expiry date, days remaining, and the raw WHOIS output. If the expiry is within 60 days and you haven't received a renewal notice from your registrar, it's worth logging in to check that auto-renewal is active and the payment method on file hasn't expired.

When a WHOIS lookup is useful beyond expiry

WHOIS data comes up in situations beyond just checking your own domains. A lookup during an acquisition or partnership confirms who actually owns a domain. If you're investigating phishing or brand impersonation, the registration date and registrar can reveal whether a look-alike domain was created recently. And for email delivery issues, checking whether the domain is still active and which registrar controls it is a basic first step.

Keep an eye on expiry automatically

A manual WHOIS check shows the current state, but domain expiry is a calendar problem — it happens once and the consequences are immediate. Domain expiration monitoring tracks expiry dates across all your domains and alerts you well in advance. If you manage client domains or run multiple projects, automated alerts catch the one renewal that slipped through while you were focused on something else.