SecurityTrails vs WHOISJSON - Domain API Comparison

Overview

SecurityTrails

DNS & Domain Intelligence for Security Research

SecurityTrails provides comprehensive DNS intelligence, passive DNS data, subdomain enumeration, and WHOIS history for security researchers and threat intelligence teams.

50 queries/month free

WHOISJSON

WHOIS, DNS, SSL, and availability API with a lightweight free plan

WHOISJSON packages WHOIS, DNS, SSL certificate, and availability lookups into a lightweight API for teams that need practical lookup coverage without enterprise overhead.

Free plan available

Pricing Comparison

Pricing	SecurityTrails	WHOISJSON
Free Tier	50 queries/month free	Free plan available
Paid Plans	Usage-based plans via sales	From $10/month
Enterprise	Custom enterprise plans	Higher-volume plans available
TLD Coverage	320M+ domains indexed	1,500+ TLDs

Feature Comparison

Feature	SecurityTrails	WHOISJSON
Free Tier	Limited	Included
API Access	Included	Included
Bulk Operations	Included	Limited
Real-time Data	Included	Included
WHOIS Data	Included	Included
DNS Lookup	Included	Included
Domain Valuation	Not Included	Not Included
Brand Monitoring	Limited	Not Included
MCP/AI Integration	Not Included	Not Included

Which is Better?

Choose SecurityTrails if you need

Massive passive DNS database
Excellent subdomain enumeration
Historical WHOIS and DNS data

Choose WHOISJSON if you need

Covers WHOIS, DNS, SSL, and availability in one API
Simple entry pricing and low-friction onboarding
Useful free tier for early testing and prototypes

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

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