Features, pricing, ratings, and pros & cons — compared head-to-head.
DNSAudit.io is a free security scanning tool by DNSAudit.io. Flan is a free security scanning tool. Compare features, ratings, integrations, and community reviews side by side to find the best security scanning fit for your security stack.
Based on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
AppSec teams running CI/CD pipelines who need fast, actionable vulnerability scanning without vendor lock-in should evaluate Flan. Its free pricing and 4,141 GitHub stars signal strong adoption among developers who actually run the tool in production, not just evaluate it. Skip this if your team needs managed remediation workflows or integration with expensive commercial platforms; Flan is a scanner, not a platform, and requires you to build the response layer yourself.
Free DNS security scanner that checks domains for misconfigs and exposure.
A vulnerability scanner that helps you identify and fix vulnerabilities in your code
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I started using DNSAudit.io to do a quick sanity check on a client's domain before a migration. Ended up finding a wildcard DNS entry that had been sitting there for years, completely forgotten. The scan is fast and doesn't require an account, which matters when you're jumping between client environments. The scoring breakdown is actually useful, not just a traffic light. It tells you what's wrong and why. And I really love they also explain how to fix all the issues you find in the results!! Also i have started using its api as well and its works amazingly good for integrations
Solid free tool for a first pass on DNS security posture. Useful if you need to hand a non-technical stakeholder something with a score and clear findings. Checks zone transfer exposure, SPF/DMARC/DKIM, DNSSEC, and a bunch of other things I normally have to check manually with dig.
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Common questions about comparing DNSAudit.io vs Flan for your security scanning needs.
DNSAudit.io: Free DNS security scanner that checks domains for misconfigs and exposure. built by DNSAudit.io. Core capabilities include 40+ automated DNS security checks per domain scan, DNS security score and letter grade (A+ to F), SPF, DMARC, and DKIM validation..
Flan: A vulnerability scanner that helps you identify and fix vulnerabilities in your code..
Both serve the Security Scanning market but differ in approach, feature depth, and target audience.
DNSAudit.io is developed by DNSAudit.io. Flan is open-source with 4,141 GitHub stars. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.
DNSAudit.io and Flan serve similar Security Scanning use cases: both are Security Scanning tools. Key differences: Flan is open-source. Review the feature comparison above to determine which fits your requirements.
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