Bulk SSL Checker
Check SSL certificates for multiple domains at once — expiry dates, status, issuer.
What is the Bulk SSL Checker?
The Bulk SSL Checker verifies the SSL certificate of multiple domains simultaneously — ideal for hosting providers, sysadmins and web agencies managing dozens of sites. Instead of checking each domain individually, you get a complete overview in seconds.
What does it check?
- Expiry date — when each certificate expires and how many days remain.
- Status — OK / Soon (≤30 days) / Critical (≤14 days) / Expired.
- Issuer — which Certificate Authority (CA) issued the certificate.
- Subject CN — the domain the certificate was issued for (useful for wildcard certs).
How do I use it?
- Enter one domain per line — or separated by commas (up to 10 domains).
- Accepted formats:
example.com,https://example.com,example.com:8443. - Click "Check SSL" — results appear in a table.
- Click any domain for a full analysis via the SSL Checker.
Color coding
- ✓ OK — valid, expires in >30 days.
- ⚠ Soon — expires in 15–30 days.
- 🔴 Critical — expires in ≤14 days. Renew immediately.
- ✗ Expired — the certificate has already expired.
Frequently Asked Questions
How many domains can I check at once?
Up to 10 domains per request. If you enter more, only the first 10 are checked. For larger numbers, split them into groups.
Why does "Connection failed" appear for a domain?
The domain may have no SSL at all, may reject connections on port 443, or may have a firewall blocking external connections. Try it individually with the SSL Checker for a detailed diagnosis.
Can I check custom ports (e.g. :8443)?
Yes. Write the domain as
example.com:8443 and the check will be performed on that specific port instead of the default 443.Why does the Subject CN differ from the domain I checked?
Wildcard certificates (e.g.
*.example.com) cover many subdomains but the CN shows the wildcard pattern. This is normal and the certificate is valid for the subdomain that was checked.