CT Feed Search

Search Certificate Transparency logs for certificates issued to a domain

Domain

Issuer (optional)

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About Certificate Transparency Feed

Monitors Certificate Transparency logs in real-time for newly issued certificates for your domains. Detects unauthorized certificate issuance and provides instant notifications.

How to Use

1Enter the domain name you want to monitor.
2Click "Search CT Feed" to query the Certificate Transparency logs.
3Review the issued certificates list including issuer, validity dates, and serial numbers.

Use Cases

•Detect unauthorized certificate issuance for your domains
•Compliance monitoring for Certificate Transparency requirements
•Brand protection against fraudulent certificate issuance

Frequently Asked Questions

Certificate Transparency (CT) is a system for monitoring and auditing SSL/TLS certificates. It requires certificate authorities to publish every certificate they issue to public, append-only logs, enabling domain owners to track certificate issuance.

New certificates typically appear in CT logs within minutes to hours of issuance. Our tool queries multiple CT logs to provide near real-time detection of newly issued certificates.

If you discover certificates you did not authorize, contact the issuing Certificate Authority immediately to revoke them. You should also investigate how the unauthorized issuance occurred and consider enabling CT monitoring alerts.

Tips & Best Practices

•Subscribe to CT feeds for domains you actively use certificates for
•Filter CT feeds by your domain patterns to reduce noise
•Combine CT feed monitoring with active certificate scanning
•Set up automated alerts for immediate notification of new certificates

Technical Details

Protocol: CT Log API for real-time certificate stream access
Format: JSON-encoded certificate entries with timestamps
Filtering: Domain pattern matching for targeted monitoring
Integration: Webhook and email alert capabilities