as3nt vs Attack Surface Scan: side-by-side comparison (2026)

as3nt: A tool for enumerating subdomains of a given domain.

Attack Surface Scan: Agentless external attack surface monitoring with continuous change detection, built by Attack Surface Scan.

The table above shows where their features, integrations, deployment and company size fit differ.

as3nt is open-source with 12 GitHub stars. Attack Surface Scan is made by Attack Surface Scan. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. as3nt and Attack Surface Scan are both External Attack Surface Management products, and both cover Subdomain Enumeration. Key differences: as3nt is Free while Attack Surface Scan is Commercial, as3nt is open-source. Use the table above to see where features, deployment and company size fit differ.