Domains, Web & Infrastructure · Subdomains & Certificates

crt.sh

Search certificate-transparency logs for certificates and related hostnames.

visibility
Public
risk
Low risk
activelow riskcurated
01overview

What this tool does.

crt.sh provides direct search access into certificate-transparency data, which makes it valuable for hostname discovery, certificate history and domain footprint research.

Useful for subdomain discovery and investigating public certificate issuance around a target.

02interactive

Run this tool.

Enter a target to view results from this tool. Review its scope and access requirements before running a search.

run
logging · lightcooldown · 10s

Your input is processed by OSINT.dev and, where needed, sent to the provider used by this tool.

Search active Certificate Transparency records and in-scope names through crt.sh. Public third-party index; results can be historical or stale.

tagsOSINTEthicalPassive CollectionInfrastructureFreeBrowser Based
03documentation

Documentation · 2 documents.

editorial

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