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.

Subdomain Discovery API

crawland/subdomain-discovery-api

Paginated subdomain enumeration for any registered domain — DNS records, registrar, WHOIS, vendor reputation, and category labels per subdomain, served from the Crawland threat-intelligence backend.

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.

Subdomain Intelligence OSINT Scanner & Monitor

thescrapelab/subdomain-intelligence-osint

Subdomain finder and OSINT exposure monitor for authorized domains. Discover subdomains, validate DNS, classify live/auth-gated/DNS-only assets, detect technologies and providers, monitor changes, and generate reports.

Sublist3r Subdomain Finder & Takeover Scanner

datacach/sublist3r-subdomain-finder

Subdomain enumeration from passive OSINT sources — certificate transparency logs, passive DNS and public APIs — with optional active HTTP/TLS fingerprinting of every live host, scored for takeover risk. Run it only against domains you are authorized to assess.

WHOIS, DNS, SSL, and subdomain intelligence for any domain in one run. Registration data, DNS records, SSL chain, subdomain discovery from CT logs. Essential for OSINT, security research, penetration testing, and domain due diligence.

Subdomains Finder API - Realtime DNS Subdomain Scanner

dev00/subdomains-finder-api-realtime-dns-subdomain-scanner

High-performance subdomain scanner that retrieves all registered subdomains, IP addresses, and Cloudflare protection status for any given domain.

Subdomain Radar — Passive OSINT Enumeration

saregaa/subdomain-scraper

Discover subdomains silently. No brute-force — pure OSINT from 5 passive sources with DNS resolve, HTTP probing & takeover detection.

WHOIS & DNS Lookup — Domain Info, SSL, IP, Registrar

apivault_labs/domain-intelligence-scraper

WHOIS + DNS + SSL + subdomain lookup for any domain. Perfect for OSINT, security audits, SEO research, lead generation.

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.