CORSy vs DNSAudit.io: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
CORSy is a free security scanning tool. DNSAudit.io is a free security scanning tool by DNSAudit.io. Compare features, ratings, integrations, and community reviews side by side to find the best security scanning fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
DevSecOps teams scanning third-party APIs and SaaS integrations will get the most from CORSy because it catches CORS header misconfigurations that let attackers bypass same-origin policy restrictions; most teams never audit this attack surface until it causes a breach. The tool is free and command-line native, which means it fits into CI/CD pipelines without licensing friction or vendor lock-in. Skip this if you need a GUI, reporting dashboards, or coverage beyond HTTP header analysis; CORSy is deliberately narrow and won't replace a full web application scanner.
Data verified May 2026
ADYour product here. Reach security decision-makers.Launch a campaign
CORSy
A Python-based command-line tool that scans websites for CORS misconfigurations by analyzing HTTP response headers to identify potential security vulnerabilities.
DNSAudit.io
Free DNS security scanner that checks domains for misconfigs and exposure.
Side-by-Side Comparison
Feature
CORSy
DNSAudit.io
Pricing Model
Free
Free
Category
Security Scanning
Security Scanning
Verified Vendor
Deployment & Fit
Deployment Type
Cloud
Company Size Fit
Startup, SMB, Mid-Market, Enterprise
Open Source
GitHub Stars
1,465
Last Commit
Nov 2021
Company Information
Company
DNSAudit.io
Headquarters
Founded, Size & Funding
Use Cases & Capabilities
Scanner
Misconfiguration
DNS Security
DMARC
SPF
DKIM
Security Scanning
Reconnaissance
DNS Rebinding
NIST CSF 2.0 Coverage
NIST CSF 2.0 Mapping
Access NIST CSF 2.0 data from thousands of security products via MCP to assess your stack coverage.
Access via MCPCore Features
- No features listed
- 40+ automated DNS security checks per domain scan
- DNS security score and letter grade (A+ to F)
- SPF, DMARC, and DKIM validation
- DNSSEC status check
- Zone transfer exposure detection
- Open resolver and DNS amplification vector detection
- DNS rebinding risk identification
- Passive DNS threat correlation (botnet/malware-linked IPs)
Community
Community Votes
0
2
Bookmarks
User Reviews
No reviews yet
5.0/5(2 reviews)
Recent Reviews
5/5
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
5/5
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.
Need help choosing?
Explore more tools in this category or create a security stack with your selections.
