Bulk SSL Certificate Checker
Check SSL/TLS certificates for multiple domains at once. Verify expiry dates, issuers, protocols, and security status.
Our free bulk SSL certificate checker allows you to verify SSL/TLS certificates for multiple domains simultaneously. Check certificate expiry dates, issuers, supported protocols, and security status. Perfect for certificate management, security audits, and monitoring.
Features
Bulk Processing
Check multiple SSL certificates at once. Upload CSV files or paste domain lists for efficient batch processing.
Detailed Information
Get comprehensive certificate details including expiry dates, issuers, protocols, and security status.
Export Options
Download results in CSV format, copy to clipboard, or export as JSON for integration with other tools.
Security Validation
Verify SSL/TLS protocols, certificate chains, and security best practices. Identify potential issues early.
How to Use
Enter domains (one per line) or upload a CSV file
mydomain.net
test-site.org
For CSV uploads, ensure your file has a "domain" column
example.com,Main site
test.com,Development
Click "Start Check" to process certificates
Free users can check up to 10 domains per request
Review results and export as needed
Results show expiry dates, issuers, and security status
Understanding SSL/TLS Certificates
Certificate Information
When the certificate will expire and need renewal
Certificate Authority that issued the certificate
Domain(s) the certificate is valid for
SSL/TLS versions supported by the server
Certificate Status
Certificate is current and properly signed
Certificate has passed its expiry date
Certificate not issued by trusted authority
Certificate has validation issues
Common Use Cases
Certificate Management
- Track expiry dates
- Monitor renewals
- Verify installations
- Audit certificates
- Plan renewals
Security Audits
- Protocol verification
- Security assessment
- Compliance checks
- Chain validation
- Configuration review
Monitoring
- Expiry alerts
- Status tracking
- Health checks
- Issue detection
- Change monitoring
Best Practices
Certificate Management
- Regular certificate audits
- Monitor expiry dates
- Use trusted authorities
- Document renewals
- Maintain inventory
Security Configuration
- Enable modern protocols
- Use strong ciphers
- Configure HSTS
- Regular testing
- Security monitoring
Frequently Asked Questions
How many domains can I check at once?
Free users can check up to 10 domains per request. This limit helps ensure fair usage and maintains service quality. For larger batches, consider breaking them into multiple requests or using our API.
How accurate are the expiry dates?
The expiry dates are extracted directly from the SSL certificates and are 100% accurate. We recommend setting up alerts at least 30 days before expiration to ensure timely renewal.
What protocols do you check?
We check for support of modern protocols including TLS 1.2 and TLS 1.3. We also identify potentially insecure protocols like SSL 3.0 and TLS 1.0/1.1 that should be disabled.
Can you check internal domains?
Our tool can only check publicly accessible domains. For internal domains or private networks, consider using our downloadable command-line tool or API integration.