Who is SecurityTrails?
SecurityTrails is a cybersecurity company that provides internet asset discovery and historical DNS, WHOIS, and related domain intelligence datasets, delivered through APIs and platforms that support attack surface management and threat investigation.
- Historical and current DNS record intelligence
- WHOIS and domain registration history
- Internet asset discovery and attack surface mapping
- API-based data access for security tooling integration
- Threat investigation and domain relationship analysis
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In enterprise environments, SecurityTrails data is typically consumed by security operations teams, penetration testers, threat intelligence analysts, and infrastructure owners who need an accurate view of externally exposed assets. Its platform and programmatic interfaces allow organizations to query domain, subdomain, IP address, and certificate relationships, supporting asset inventory and exposure assessment workflows.
The offerings are built on large collections of passively collected internet data, including DNS resolution history, WHOIS registration records, and SSL certificate information. Practitioners associate these datasets with protocols and standards such as DNS, WHOIS, and TLS. The data is commonly integrated into SIEM, SOAR, and vulnerability management pipelines through programmatic interfaces and exports.
Within the cybersecurity market, the company operates in attack surface management and external threat intelligence, a category that overlaps with domain intelligence, external asset discovery, and digital footprint monitoring. Its historical datasets differ from point-in-time scanning because they show how infrastructure has changed over time. This helps analysts attribute infrastructure, identify shadow IT, and trace the reuse of malicious domains.
The business significance lies in reducing blind spots created by distributed cloud hosting, third-party services, and short-lived domains. Security leaders use this visibility to prioritize remediation, validate asset ownership, and support incident response. Directory positioning reflects the company's current solution areas, which center on attack surface management, internet asset intelligence, and threat investigation for security practitioners.
Our description of SecurityTrails. Updated October 2026.
