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WHOIS API - Domain, IP & ASN Lookup

🚀 Getting Started

Access comprehensive WHOIS data for domains, IP addresses, and autonomous systems through powerful API endpoints. Get real-time registration details, ownership information, nameservers, and contact data for any domain. Query individual records or process thousands of lookups simultaneously with bulk endpoints designed for efficiency and scale. Whether you're verifying domain availability, checking registration dates, or gathering registrant contact information, the live WHOIS endpoints deliver accurate data instantly.

Beyond standard WHOIS lookups, explore historical domain records, perform reverse WHOIS searches to find domains by owner details, email addresses, organizations or keywords. Whether you're conducting due diligence, monitoring domain portfolios, investigating cyber threats, or building domain intelligence tools, these endpoints deliver the data you need with speed and accuracy.

Key Features:

  • 🌐 Real-time domain registration data including registrar, creation date, expiration date, nameservers, and registrant information for any domain.
  • 📦 Process multiple domain lookups in a single request, perfect for portfolio management, monitoring large domain lists, or batch analysis.
  • 🔢 Get network information for any IP address including organization, ISP, country, allocation date, and network ranges.
  • 📡 Access autonomous system information including AS number details, organization data, and network allocations for routing analysis.
  • 📜 Query past WHOIS data to track domain ownership changes, investigate historical registrations, and analyze domain lifecycle patterns.
  • ⚡ Low-latency WHOIS queries with high availability to ensure consistent data access for your applications and workflows.

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