Quick Facts
- Website
- securitytrails.com
- Pricing Starts At
- Contact sales
- Free Tier
- No current public free-tier terms
- Category
- DNS and infrastructure APIs, WHOIS and RDAP APIs, Threat and vulnerability intelligence APIs
- TLD Coverage
- 320M+ domains indexed
- Enterprise Plan
- Custom pricing
Overview
SecurityTrails provides comprehensive DNS intelligence, passive DNS data, subdomain enumeration, and WHOIS history for security researchers and threat intelligence teams.
Pros & Cons
✓ Pros
- Massive passive DNS database
- Excellent subdomain enumeration
- Historical WHOIS and DNS data
− Cons
- Enterprise pricing not transparent
- Limited free tier
- Security-focused, not for domain registration
Compare with DomScan →
See how SecurityTrails compares to DomScan across features, pricing, and TLD coverage.
SecurityTrails vs DomScan
| Feature | SecurityTrails | DomScan |
|---|---|---|
| Free Tier | − | ✓ 10,000/month |
| Domain Availability | ✓ | ✓ |
| WHOIS Data | ✓ | ✓ |
| DNS Lookup | ✓ | ✓ |
| Domain Valuation | − | ✓ |
| Brand Monitoring | Limited | ✓ |
| MCP/AI Integration | − | ✓ |
| Bulk Operations | ✓ | ✓ |
Sources
Last updated:

