Get started
Tools / Whois RDAP / Use Cases / Look Up Domain Registration Details

Look Up Domain Registration Details

Query WHOIS and RDAP databases to get complete registration information for any domain.

Tool
Whois RDAP icon
Whois RDAP

Every registered domain has a public record containing information about who registered it, when, through which registrar, and when the registration expires. This information is essential for verifying domain ownership, contacting domain holders, investigating suspicious domains, and planning domain acquisitions.

The lookup_domain skill queries both WHOIS and the newer RDAP protocol to retrieve comprehensive registration data for any domain. You get registrant information (where available), registration and expiration dates, nameserver details, registrar information, and domain status codes. This is the definitive source for domain registration facts, used by security researchers, legal teams, domain investors, and system administrators daily.

Agent Guides

Claude

  1. Connect ToolRouter: claude mcp add toolrouter -- npx -y toolrouter-mcp
  2. Ask Claude: "Look up registration details for example.com using whois-rdap"
  3. Claude returns complete WHOIS/RDAP registration data
Read full guide →

ChatGPT

  1. Configure ToolRouter in ChatGPT
  2. Ask: "Look up WHOIS data for this domain" and provide the domain name
  3. ChatGPT returns registration details
Read full guide →

Copilot

  1. Add ToolRouter to Copilot MCP config
  2. In Copilot Chat: "Look up WHOIS data for this domain using whois-rdap"
  3. Copilot returns structured registration data
Read full guide →

OpenClaw

  1. Connect ToolRouter: openclaw mcp add toolrouter -- npx -y toolrouter-mcp
  2. Ask OpenClaw: "Look up WHOIS registration for this domain"
  3. OpenClaw returns complete registration details
Read full guide →

Related Use Cases

Open Check Domain Expiration Dates

Check Domain Expiration Dates

Monitor when domains expire to prevent accidental lapses or plan acquisition of expiring domains.

Whois RDAP icon
Whois RDAP4 agent guides
Open Research Domain Ownership History

Research Domain Ownership History

Investigate the ownership history and registration timeline of a domain for due diligence and research.

Whois RDAP icon
Whois RDAP4 agent guides
Open Check Domain Age

Check Domain Age

Determine when a domain was first registered to assess its maturity, trustworthiness, and SEO value.

Whois RDAP icon
Whois RDAP4 agent guides

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.