WhoisXML API is a global leader in domain, IP, DNS, and cyber-threat intelligence—designed to strengthen digital transparency, accelerate investigations, and empower enterprises to stay ahead of Internet-scale threats. Backed by 15+ years of continuous data crawling, the platform provides the world’s most complete and readily accessible repository of domain-related intelligence, trusted by MSSPs, SOC teams, Fortune 1000 companies, government agencies, law-enforcement units, and cybersecurity vendors.
With an unmatched data universe—including 50+ billion domains and subdomains, 25.5+ billion WHOIS records, 116+ billion DNS records, and 10.5+ million IP netblocks—WhoisXML API offers visibility that few organizations can achieve on their own. Every data point is collected, normalized, enriched, and delivered through highly scalable APIs, lookup tools, and enterprise-grade datasets.
At the core of WhoisXML API is a commitment to making the Internet safer and more transparent. Its intelligence ecosystem is powered by advanced machine learning, automated data pipelines, and large-scale correlation engines, enabling security teams to uncover hidden connections across domains, IPs, hosting infrastructure, SSL records, and threat actor patterns. These insights help analysts detect malicious infrastructure early, investigate threat campaigns, prevent fraud, and enhance digital-risk protection programs.
WhoisXML API provides specialized intelligence solutions tailored for different mission-critical use-cases:
Internet Surface Intelligence – Get a complete, real-time view of external digital assets.
Cyber Threat Intelligence Enrichment – Strengthen detection, correlation, and threat-hunting workflows.
Digital Risk Protection (DRP) Intelligence – Identify impersonation, brand abuse, and domain-based fraud.
KWYTT (Know Who You're Talking To) Intelligence – Validate digital identities, domain ownership, and online legitimacy.
Law Enforcement Intelligence – Map malicious actors and infrastructure for cybercrime investigations.
Market & Competitive Intelligence – Analyze domain movements, brand expansions, and digital footprints.
Security Operations & Platform Intelligence – Integrate actionable intelligence into SIEM, SOAR, EDR, and SOC ecosystems.
With the most complete domain intelligence library available on the market, WhoisXML API enables organizations to investigate faster, defend smarter, and make the Internet safer for everyone.