Pricing

Pay per event

🔍 Subdomain Finder

Discover subdomains for any domain using Certificate Transparency logs (crt.sh). Find hidden subdomains for security audits, penetration testing, asset inventory. No API key needed.

Pricing

Pay per event

Rating

0.0

(0)

Developer

太郎山田

Actor stats

Bookmarked

Total users

Monthly active users

12 hours ago

Last modified

Subdomain Finder - Discover Subdomains via Certificate Logs API through CLI

The Apify CLI is the official tool that allows you to use 🔍 Subdomain Finder locally, providing convenience functions and automatic retries on errors.

Install Apify CLI

Using installation script (macOS/Linux):

$curl -fsSL https://apify.com/install-cli.sh | bash

Using installation script (Windows):

$irm https://apify.com/install-cli.ps1 | iex

Using Homebrew:

$brew install apify-cli

Using npm:

$npm install -g apify-cli

Other API clients include:

🔍 Subdomain Finder API in Python

🔍 Subdomain Finder API in JavaScript

🔍 Subdomain Finder OpenAPI definition

🔍 Subdomain Finder API

Subdomain Finder

automation-lab/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.

Stas Persiianenko

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

198

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

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 - Bulk Expiry Monitor

pink_comic/ssl-certificate-checker

SSL certificate checker for certificate issuer, expiration dates, chain validation, and protocol details. Monitor certificate health for any domain. For security audits, compliance, and uptime monitoring. No API key required.

Ava Torres

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

Security Headers Checker - HTTP Security Audit

pink_comic/security-headers-checker

HTTP security header audit for HSTS, CSP, X-Frame-Options, and more. Grade your website security posture against best practices. For penetration testing, compliance checks, and web hardening. No API key required.

Ava Torres

Free Linkedin Company Finder - LinkedIn address From Any Site

s-r/free-linkedin-company-finder---linkedin-address-from-any-site

Find LinkedIn company pages for any domain name. This powerful actor searches and extracts LinkedIn company URLs for domains, supporting international LinkedIn subdomains and bulk processing. Perfect for sales teams, recruiters, and data enrichment.