SecurityTrails vs WhoisXML API - 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

WhoisXML API

Enterprise Domain, IP & DNS Intelligence

WhoisXML API offers product-specific WHOIS, DNS, IP, and threat data packages plus annual enterprise bundles for research, fraud, and security teams.

Complimentary credits after signup

Pricing Comparison

Pricing	SecurityTrails	WhoisXML API
Free Tier	50 queries/month free	Complimentary credits after signup
Paid Plans	Usage-based plans via sales	Product-specific subscriptions
Enterprise	Custom enterprise plans	Enterprise annual subscriptions
TLD Coverage	320M+ domains indexed	7,500+ TLDs

Feature Comparison

Feature	SecurityTrails	WhoisXML API
Free Tier	Limited	Limited
API Access	Included	Included
Bulk Operations	Included	Included
Real-time Data	Included	Included
WHOIS Data	Included	Included
DNS Lookup	Included	Included
Domain Valuation	Not Included	Not Included
Brand Monitoring	Limited	Premium Only
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 WhoisXML API if you need

Very broad domain and infrastructure coverage
Historical WHOIS, DNS, and threat data
Enterprise packages for security workflows

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