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

a month 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 - Discover Every Subdomain Of A Domain

thirdwatch/subdomain-finder

Discover every subdomain for any apex domain. Merges 4 sources: certificate transparency (crt.sh), HackerTarget, RapidDNS, plus DNS bruteforcing of common names. Verifies each is live via DNS + HTTP probe.

Thirdwatch

🔍 Subdomain Finder & CT Log Scraper

taroyamada/subdomain-finder

Map website architectures by extracting subdomains from public Certificate Transparency logs to find unlinked staging sites.

太郎山田

Real Subdomain Finder

onescales/real-subdomain-finder

Discover every subdomain for any domain. Queries 40+ OSINT sources including cert transparency, DNS archives & web scanners. Results enriched with DNS validation, HTTP probing, and subdomain takeover detection. No API keys required.

One Scales

5.0

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

214

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

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

SSL Certificate Inspector - TLS Audit & Expiry Monitor

santamaria-automations/ssl-certificate-inspector

Inspect SSL/TLS certificates for any domain: chain validation, expiry dates, cipher suites, TLS versions, subject alt names, issuer details, and security scoring. Export data, run via API, schedule and monitor runs, or integrate with other tools.

Ale