Cisco Talos’ Intelligence Center provides IP and domain intelligence for threat detection.
CertKit Certificate Search
CertKit searches public certificate-transparency logs for certificates, subdomains and domain changes.
About CertKit Certificate Search
CertKit Certificate Search queries public certificate-transparency logs by domain to find issued TLS certificates. Results can show new subdomains, renewals, and potentially suspicious issuance. Searches are rate-limited when used too quickly, with contact information provided for higher limits.
Key features
- Search public certificate-transparency logs by domain
- List public TLS certificates issued for a domain
- Reveal new subdomains from certificate records
- Identify certificate renewals
- Flag potentially suspicious certificate activity
Best for: People monitoring certificates, researching domains, or checking issuance history.
Watch out for
- Limited to public certificates recorded in transparency logs.
- Search rate is limited when queries are made too quickly.
CertKit Certificate Search at a glance
- Website
- certkit.io/tools/ct-logs
- Category
- Privacy & Security › Security Research
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web, Windows
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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CertKit Certificate Search FAQ
What can I do if searches are rate-limited?
The site states to contact [email protected] for greater rate limits.
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