SUBDOMAIN LENSPassive Attack Surface Discovery

Discover Your Public Attack Surface

Find public subdomains, DNS records and lightweight website information from one simple scan.

Passive Discovery Only
24h retention

Passive Subdomain Discovery

Searches Certificate Transparency and other passive data sources to discover potential subdomains without brute-force enumeration.

DNS & Wildcard Verification

Resolves DNS records and detects wildcard DNS responses to remove false positives and confirm discovered hostnames.

Safe HTTP & TLS Checks

Checks standard web ports 80 and 443 to identify live websites, redirects, page titles, technologies and TLS certificate details.