Pricing

Pay per event

Subdomain Finder

This actor discovers subdomains by querying certificate transparency logs via crt.sh. It finds all SSL/TLS certificates ever issued for a domain, extracting unique subdomain names. This passive reconnaissance technique requires no direct scanning.

Pricing

Pay per event

Rating

0.0

(0)

Developer

Stas Persiianenko

Actor stats

Bookmarked

Total users

Monthly active users

5 hours ago

Last modified

SSL Certificate Transparency Search

ryanclinton/crt-sh-search

Search Certificate Transparency (CT) logs via crt.sh to discover every SSL/TLS certificate ever issued for any domain. Enumerate subdomains, audit certificate histories, and monitor for unauthorized certificate issuance -- all through a clean JSON API on Apify with no infrastructure to manage.

ryan clinton

Subdomain Finder

happitap/subdomain-finder

Subdomain Finder is a high-speed intelligence tool that uncovers subdomains for any target domain using Certificate Transparency (CT) logs. Unlike traditional brute-force tools, it requires no heavy traffic and provides results in seconds.

HappiTap

Subdomain Finder & Reverse IP

canadesk/subdomain-finder-reverse-ip

Enumerate Subdomains and Reverse IPs with RapidDNS, Anubis, AlienVault and crt.sh! It's fast and costs little.

Canadesk Support

191

SSL Certificate Checker

nexgendata/ssl-certificate-checker

Check SSL/TLS certificates for any domain — expiration dates, issuer, protocol versions, and security grade. Monitor certificate health across your infrastructure.

Stephan Corbeil

SSL Certificate Checker

automation-lab/ssl-certificate-checker

SSL Certificate Checker connects to domains over TLS and inspects their SSL certificates. It returns structured data about certificate validity, expiry, issuer chain, TLS protocol version, cipher suite, and a security grade from A+ to F.

Stas Persiianenko

Subdomain Finder & Recon Tool

andok/subdomain-finder

Discover subdomains for any target via passive OSINT sources. Ideal for security bug bounties and attack surface mapping.

Andok

SSL Certificate Checker

rationalistic_counsel/ssl-certificate-checker

J N

SSL Certificate Expiry Monitor

andok/ssl-certificate-monitor

Monitor SSL/TLS certificate validity and expiration dates across thousands of domains to prevent costly outages.

Andok

Organization Registered Domain & Subdomain Scraper

lofomachines/organization-registered-domain-subdomain-scraper

Discover all domains registered by any organization by company domain. Find related domains, subdomains, registration dates, expiration dates, and registrar information. Perfect for brand protection, competitive analysis, M&A due diligence, and security research.

Lofomachines

SSL Certificate Checker

scrappy_garden/ssl-certificate-checker

Check SSL/TLS certificates for any website: expiration date, issuer, subject, hostname match (SNI), chain/authorization status, and common HTTPS misconfigurations. Useful for SEO audits, security checks, and uptime monitoring.