Built for the world after
WHOIS went dark
ICANN sunsetted WHOIS. GDPR redacted the rest. WhoisGenius finds the real domain operator anyway, and shows you exactly how it got the answer.
Born from real research
WhoisGenius started during internet-wide vulnerability research, where responsible disclosure depends on knowing exactly which organization operates a domain. Not the CDN. Not the registrar. The actual operator.
Existing tools were behind $50,000/year paywalls, returned nothing for GDPR-redacted domains, or produced confidence numbers with zero evidence. We built the tool we needed, then opened it up.
Who uses WhoisGenius
Security Teams
Identify who operates phishing domains, investigate infrastructure behind threat campaigns, and produce attribution evidence for incident reports.
Legal & IP Enforcement
Build evidence for UDRP disputes, trademark enforcement, and cease-and-desist actions with signed attribution certificates that hold up to scrutiny.
Compliance & Risk
Screen domains for due diligence, verify vendor infrastructure claims, and maintain auditable records of domain operator attribution over time.
Narrative Intelligence
Map who controls media domains, track cross-domain operator portfolios, and correlate infrastructure to uncover coordinated information operations.
Why it works when other tools don't
Multi-source fusion
Instead of relying on WHOIS alone, WhoisGenius cross-references 12 intelligence sources simultaneously. When one source is redacted or masked, others fill the gap.
Full evidence chain
Every result is fully decomposable. You see exactly which sources contributed, how much weight each carried, and where disagreements occurred.
Intelligence for teams, not enterprises
DomainTools charges $50,000+/year. Commodity WHOIS APIs give you raw data with no analysis. WhoisGenius gives you scored attribution with full evidence at a price that works for security teams, independent researchers, and legal professionals.
Start free with 500 queries per month. No credit card. Upgrade when you need more.