Subdomain Finder API — Certificate Logs & DNS, No Key
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from $0.30 / 1,000 subdomains
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Subdomain Finder API — Certificate Logs & DNS, No Key
Find a domain's subdomains in public certificate-transparency logs (crt.sh and Cert Spotter), resolve each over DNS-over-HTTPS (A, AAAA, CNAME) and optionally check which answer on the web: status, title, server. Hostnames only. No API key, no login.