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owasp.org

Every SSL/TLS certificate ever issued for this name, indexed from public CT logs.

csv export pro
total records
158
active · on this page
16
expired · on this page
2
unique issuers · on this page
5
issuers on this pageMicrosoft8DigiCert5ZeroSSL3Let's Encrypt1Google Trust1
domainstatus
*.secureflag.owasp.orgcrt.sh
Microsoft
expires in 7mo
*.secureflag.owasp.orgcrt.sh
Microsoft
expires in 7mo
*.secureflag.owasp.orgcrt.sh
DigiCert
expires in 7mo
*.secureflag.owasp.orgcrt.sh
Microsoft
expires in 7mo
secureflag.owasp.orgcrt.sh
DigiCert
expires in 7mo
*.secureflag.owasp.orgcrt.sh
DigiCert
expires in 7mo
*.secureflag.owasp.orgcrt.sh
DigiCert
expires in 7mo
cloud.owasp.orgcrt.sh
Let's Encrypt
expired 2mo ago
*.secureflag.owasp.orgcrt.sh
ZeroSSL
expires in 4mo
*.secureflag.owasp.orgcrt.sh
ZeroSSL
expires in 2mo
*.secureflag.owasp.orgcrt.sh
ZeroSSL
expires in 1mo
*.owasp.orgcrt.sh
Microsoft
expires in 1mo
contact.owasp.orgcrt.sh
Google Trust
expired 4mo ago
*.secureflag.owasp.orgcrt.sh
DigiCert
expires in 8mo
*.secureflag.owasp.orgcrt.sh
Microsoft
expires in 8mo
*.secureflag.owasp.orgcrt.sh
Microsoft
expires in 8mo
*.secureflag.owasp.orgcrt.sh
Microsoft
expires in 8mo
*.secureflag.owasp.orgcrt.sh
Microsoft
expires in 8mo
Pipe results into your recon pipeline
# Python
$ pip install ct-radar
$ ct-radar owasp.org | httpx -silent
# Go
$ go install github.com/imfht/ct-radar-cli/cli@latest
$ ct-radar owasp.org | nuclei
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Related domains under .org

About certificate history for owasp.org

This page lists every X.509 (SSL/TLS) certificate ever issued for owasp.org and its subdomains, as recorded in public Certificate Transparency (CT) logs. CT logs are an immutable, append-only record of every certificate issued by participating Certificate Authorities (CAs), as required by the major browsers since 2018.

Subdomain enumeration via CT logs is one of the highest-signal techniques in reconnaissance — every time a TLS certificate is issued, all Subject Alternative Names (SANs) on that certificate become public. Internal and forgotten subdomains regularly show up here days after they're set up.

To monitor owasp.org for newly-issued certificates in real-time (useful for detecting unauthorized issuance, phishing variants, or shadow IT) add it to your watchlist (Pro plan).