SecurityTrails vs WHOISJSON: API comparison

SecurityTrails vs WHOISJSON

Domain API comparison

Overview

Which of these two providers fits my workload?

SecurityTrails

DNS & domain intelligence for security research

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

No current public free-tier terms

WHOISJSON

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

WHOISJSON packages WHOIS, DNS, SSL certificate, and availability lookups into one API.

1,000 requests/month, no card required

Pricing comparison

Watch out for: Credits, pages, requests, records, compute units, subscriptions, and browser-time blocks are not interchangeable.

Pricing	SecurityTrails	WHOISJSON
Free tier	No current public free-tier terms	1,000 requests/month, no card required
Paid plans	Contact sales	$10/month for 30,000 requests
Enterprise	Custom pricing	$600/month Atlas plan; higher volume custom
How usage is billed	Credits, pages, requests, records, compute units, subscriptions, and browser-time blocks are not interchangeable.	Credits, pages, requests, records, compute units, subscriptions, and browser-time blocks are not interchangeable.

Feature comparison

Feature	SecurityTrails	WHOISJSON
Free tier	Not included	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