Scan any domain instantly for DNS misconfigurations, subdomain takeovers, and security vulnerabilities. No signup required.
Free instant scan — no signup required. Try it on your own domain.
Everything you need to secure your domain infrastructure
Identify vulnerable subdomains pointing to unclaimed services before attackers do.
Comprehensive scanning for zone transfers, DNSSEC issues, and misconfigurations.
Verify SPF, DKIM, and DMARC configurations to prevent email spoofing.
Track certificate expiration, weak ciphers, and configuration issues.
Visualize your DNS infrastructure from domain to cloud service.
Schedule automated scans and receive alerts on new vulnerabilities.
No signup required. Run any tool instantly on any domain.
All-in-one assessment with PDF export
Interactive visual map of your DNS
Scan ports & find known vulnerabilities
150+ signatures across headers & body
10+ OSINT sources with HTTP probing
SPF, DKIM, DMARC analysis
Cipher suites, protocols, chain validation
Identify firewall & CDN protection
Continuous monitoring with webhook alerts
More tools, deeper analysis, completely free
| Feature | WebGuarder | SecurityTrails | Shodan | DNSDumpster |
|---|---|---|---|---|
| Free security tools | 110+ | 5 | 3 | 1 |
| Full security report | ✅ | ❌ | ❌ | ❌ |
| Email security analysis | ✅ | ❌ | ❌ | ❌ |
| Port scanning + CVEs | ✅ | ❌ | ✅ (paid) | ❌ |
| Tech stack detection | ✅ | ❌ | Partial | ❌ |
| Embeddable badges | ✅ | ❌ | ❌ | ❌ |
| DNS visual map | ✅ | ❌ | ❌ | ✅ |
| No signup required | ✅ | ❌ | Partial | ✅ |
| PDF export | ✅ | Paid | Paid | ❌ |
| Free REST API | ✅ | $50+/mo | $49+/mo | Limited |
| Free monitoring + alerts | ✅ | $500+/mo | ❌ | ❌ |
Access all 110+ security tools via REST API. No signup, no API keys. Build security checks into your CI/CD pipeline, monitoring, or custom tools. Competitors charge $50-500/month for API access — ours is free.
Choose the plan that fits your security needs