Overview
Censys
Internet Intelligence and Attack Surface Platform
Censys delivers internet-wide scanning, certificate intelligence, and external attack surface discovery for security teams and researchers.
Community tier with limited monthly queriesJsonWhois
Simple WHOIS API
JsonWhois provides a straightforward API for WHOIS lookups with JSON responses at budget-friendly pricing.
500 requests/month freePricing Comparison
| Pricing | Censys | JsonWhois |
|---|---|---|
| Free Tier | Community tier with limited monthly queries | 500 requests/month free |
| Paid Plans | Individual plans from $100/month | From $9/month |
| Enterprise | Custom team and enterprise plans | Contact for volume |
| TLD Coverage | Full IPv4/IPv6 coverage | 1,000+ TLDs |
Feature Comparison
| Feature | Censys | JsonWhois |
|---|---|---|
| Free Tier | Limited | Limited |
| API Access | Included | Included |
| Bulk Operations | Included | Limited |
| Real-time Data | Included | Included |
| WHOIS Data | Limited | Included |
| DNS Lookup | Included | Not Included |
| Domain Valuation | Not Included | Not Included |
| Brand Monitoring | Not Included | Not Included |
| MCP/AI Integration | Not Included | Not Included |
Which is Better?
Choose Censys if you need
- Comprehensive internet scanning
- Certificate and asset intelligence
- External attack surface discovery
Choose JsonWhois if you need
- Simple, focused API
- Budget-friendly pricing
- Clean JSON responses
Consider DomScan Instead
DomScan offers the best of both worlds with comprehensive features and developer-friendly pricing.
- ✓ Free tier: 10,000 credits/month (no credit card)
- ✓ 1,500+ TLDs supported
- ✓ MCP integration for AI assistants
- ✓ Domain valuation, brand monitoring, OSINT
Related Comparisons
Get Started with DomScan
10,000 free credits/month • No credit card required
Try DomScan Free
Or try our free tools first