Certificate Transparency & Subdomain Discovery Scraper

Certificate Transparency Scraper: Subdomain Discovery

arman-bd/certificate-transparency-scraper

Query certificate transparency logs via crt.sh to enumerate subdomains, issuers, validity windows and certificate history for any domain. Passive attack-surface discovery. no login, no proxy, no browser.

Scrape SSL/TLS certificate transparency logs from crt.sh for any domain. Great for security audits and subdomain discovery. Returns common name, subdomains (SANs), issuer and validity. Pay per certificate; empty runs free.

Subdomain Finder - Discover Subdomains via CT Logs

logiover/subdomain-finder

Discover every subdomain of any domain using Certificate Transparency logs (crt.sh). Fast bulk subdomain enumeration for security recon, attack-surface mapping, asset discovery and SEO. No API key — export to CSV or JSON.

Certificate Transparency Monitor — AI Agent Recon API

logiover/certificate-transparency-monitor

Keyless certificate transparency intelligence for AI agents: crt.sh CT logs. Track new TLS certs for any domain, discover subdomains via wildcard, batch domains. Issuer, validity, SAN domains and serial per row. No API key, no browser.

Subdomain Finder — Certificate Transparency (crt.sh)

bgfc97/crtsh-subdomain-finder

Discover subdomains of any domain from public Certificate Transparency logs (crt.sh). Attack-surface mapping and recon with first/last-seen dates. No key, no proxy.

Subdomain Enumeration via Certificate Transparency

perryay/subdomain-enumeration-ct-logs

Discover subdomains from Certificate Transparency logs using crt.sh and CertSpotter. Supports multi-source aggregation, deduplication, diff reporting, continuous monitoring, wildcard detection, and batch scanning — ideal for penetration testing, attack surface mapping, and security monitoring.

crt.sh Certificate Transparency Scraper

parseforge/crtsh-certificate-transparency-scraper

Queries the crt.sh certificate transparency log for one or more domains and returns each matching certificate as a flat row with issuer, validity dates, and covered domain names. Supports wildcard subdomain discovery and exports up to a million certificates per run.

Find all the subdomains of any website and check its SSL certificates. Paste a domain and get every subdomain seen in public certificate records, plus the certificate issuer, valid dates and days until expiry. Great for security checks and finding forgotten sites. No API key needed.

SSL Certificate Checker

bgfc97/ssl-certificate-checker

Check TLS/SSL certificates for many hosts: issuer, valid-from/to, days until expiry, expired/expiring-soon flags, SAN domains and trust status. For uptime & certificate-expiry monitoring. No key, no proxy.