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How to Look Up Domain Registration with Claude

Look up domain registration details with Claude and ToolRouter. WHOIS and RDAP queries instantly.

Tool
Whois RDAP icon
Whois RDAP

Claude approaches domain registration research as an investigative conversation, connecting registration patterns to strategic insights through deep reasoning. Ask Claude to analyze ownership timelines, assess domain provenance for acquisitions, and cross-reference registrar details across your entire portfolio in a single session. Its ability to draw inferences from registration data makes it especially valuable for due diligence, competitive intelligence, and security investigations where context matters.

Connect ToolRouter to Claude

1Open connector settings Open Settings
2Add a custom connector with these details
Name
ToolRouter
URL
https://api.toolrouter.com/mcp
3Let Claude set you up Open Claude
No API key needed.All platforms →

Steps

Once connected (see setup above), use the Whois RDAP tool:

  1. Ask Claude: "Look up registration details for example.com using whois-rdap"
  2. Claude returns complete WHOIS/RDAP registration data
  3. Review the registration details for the information you need
  4. Use the data for your investigation, audit, or planning

Example Prompt

Try this with Claude using the Whois RDAP tool
Look up the WHOIS registration details for example.com. I need to know who owns it, when it was registered, when it expires, and which registrar it uses.

Tips

  • Many domains use privacy protection services -- the registrant may be masked
  • Ask Claude to check multiple domains at once for batch research
  • The RDAP protocol provides more structured data than traditional WHOIS

More Claude Guides

How to Check Domain Expiry with ClaudeHow to Research Ownership History with ClaudeHow to Verify Registrar Info with ClaudeHow to Check Domain Age with ClaudeHow to Research Competitor Domains with Claude

Related Workflows

Domain Acquisition ResearchResearch domain acquisition opportunities by searching availability, checking ownership, examining DNS, and reviewing domain history.SSL and DNS AuditAudit SSL certificates, DNS configuration, HTTP security headers, and domain registration for security gaps.Domain Intelligence ReportBuild a comprehensive intelligence report on any domain using WHOIS, DNS, geolocation, and web archive data.Certificate MonitoringMonitor SSL/TLS certificates for expiration, verify TLS configuration, and confirm domain ownership alignment.Phishing Infrastructure AnalysisInvestigate suspected phishing domains through registration analysis, DNS inspection, geolocation, and evidence capture.Pre-Acquisition Domain AuditAudit a domain before purchase by reviewing registration history, DNS state, web archive history, and SEO reputation.Third-Party Risk AssessmentAssess third-party vendor security through identity verification, external security probing, attack surface analysis, and breach history.Domain Threat AssessmentScan domain security, look up registration data, review historical web presence, and compile a threat assessment report.

Roles that use Whois RDAP

Cybercrime InvestigatorCybersecurity AnalystEscrow OfficerReal Estate Attorney SpecialistSEO SpecialistTrademark Attorney