crt.sh
Searches Certificate Transparency logs for every TLS certificate issued to a domain, which often reveals forgotten subdomains.
Open crt.sh ↗https://crt.sh
- Type
- Website
- Cost
- Free
- Touches the target?
- No, passive
- Account needed
- No
- Category
- Domains & DNS
- Link status
- Online, checked 2026-09-26
Takes
Gives you
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Domain →
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