Features, pricing, ratings, and pros and cons, compared head to head.
Attack Surface Scan is a commercial external attack surface management tool by Attack Surface Scan. cnames is a free external attack surface management tool. Compare features, ratings, integrations, and community reviews side by side to find the best external attack surface management fit for your security stack. Independent and vendor-neutral: our scores and rankings are earned, never bought — sponsored placement is always labeled.
Based on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Security teams managing large subdomain inventories who need to quickly identify third-party service dependencies will find cnames valuable for that single, unglamorous job. The tool does one thing well: bulk CNAME resolution at no cost, which means you can run it repeatedly without justifying recurring spend to procurement. This is a CLI utility, not a platform; it won't replace your external attack surface management tool, but it will save time in the reconnaissance phase before you feed results into one.
Agentless external attack surface monitoring with continuous change detection.
A tool for taking a list of resolved subdomains and outputting any corresponding CNAMES en masse.
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Common questions about comparing Attack Surface Scan vs cnames for your external attack surface management needs.
Attack Surface Scan: Agentless external attack surface monitoring with continuous change detection. built by Attack Surface Scan. Core capabilities include Agentless external attack surface scanning with no installation required, Continuous scheduled re-scanning with change detection and diff tracking, HTTP security header analysis (HSTS, CSP, CORS, cookie flags)..
cnames: A tool for taking a list of resolved subdomains and outputting any corresponding CNAMES en masse..
Both serve the External Attack Surface Management market but differ in approach, feature depth, and target audience.
Attack Surface Scan and cnames serve similar External Attack Surface Management use cases: both are External Attack Surface Management tools, both cover DNS Security, Subdomain Enumeration. Key differences: Attack Surface Scan is Commercial while cnames is Free, cnames is open-source. Review the feature comparison above to determine which fits your requirements.
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