Bulk SSL Checker
Check SSL/TLS certificates for multiple domains at once. Review expiration date, issuer, CN, SAN, and common HTTPS configuration issues.
Bulk SSL Checker Online
Check the status of SSL/TLS certificates for multiple domains at once. This tool helps you quickly review the expiration date, issuer, Common Name (CN), SANs, and typical HTTPS configuration issues without analyzing each website one by one.
It is especially useful for system administrators, agencies, developers, DevOps teams, and SEO professionals who manage many domains and need a fast overview of certificate health.
- Certificate expiration date
- Remaining days before expiration
- Certificate issuer
- Common Name (CN) and Subject Alternative Names (SAN)
- Hostname mismatch or uncovered domain issues
- Unreachable domains or TLS handshake failures
| Domain | Status | Expires | Days left | Issuer | CN | SAN | Notes / error |
|---|
How the Bulk SSL Checker works
- Paste a list of domains, one per line or separated by commas.
- The tool will try to connect to each domain over HTTPS.
- It extracts the public information from the SSL/TLS certificate.
- It shows a table with the status, expiration date, issuer, CN, SAN, and possible issues.
When to use this tool
Agencies and website maintenance
If you manage many domains, you can quickly detect expired certificates, certificates close to expiration, or HTTPS configuration issues.
Technical audits
It is useful for validating the SSL/TLS status of multiple websites in a single run and identifying issues before they affect users or browsers.
Before a migration
It helps verify that HTTPS configuration remains correct after hosting, CDN, DNS, or load balancer changes.
Information returned by the tool
Validity period
The tool shows the certificate expiration date and approximate remaining days, making it easier to identify urgent renewals.
Certificate issuer
You can see which certificate authority or provider issued the certificate presented by the domain.
Common Name and SAN
It checks the hostnames covered by the certificate to help detect mismatch issues between the domain and the certificate.
Connection errors
It also shows common failures such as timeout, handshake failure, unreachable domain, or missing certificate presentation.
Frequently asked questions
Can I check multiple domains at the same time?
Yes. That is the main purpose of the Bulk SSL Checker: reviewing many SSL/TLS certificates in a single request.
Does it detect expired certificates or certificates close to expiration?
Yes. The tool can show the general certificate status and the remaining days before expiration.
Can it help identify hostname mismatch issues?
Yes. It can help you find certificates whose Common Name or SAN entries do not properly cover the requested domain.
Is it useful for agencies or infrastructure teams?
Very much so. It is a fast way to get a global view of the HTTPS status of multiple projects, clients, or environments.