🔍 WHOIS Lookup Tool

Check domain registration details, ownership information, expiration dates, and registrar data for any domain

Version 2.1.0 - Updated September 2025
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Enter the domain name you want to check WHOIS information for (e.g., example.com).
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Select specific TLDs to check if you're unsure about the domain extension.
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Specify a custom WHOIS server to use for the lookup. Leave empty to automatically detect the appropriate server.
WHOIS lookup results will appear here

Embed This Tool

Want to embed this WHOIS lookup tool on your website? Use this code:

<iframe src="https://yoursite.com/whois-lookup" width="100%" height="600" frameborder="0"></iframe>

🎯 WHOIS Record Examples

🌐 Available Domain

WHOIS response for an unregistered domain:

Domain Name: EXAMPLE-DOMAIN-123.com Registry Domain ID: Registrar WHOIS Server: Registrar URL: Updated Date: Creation Date: Registry Expiry Date: Registrar: Registrar IANA ID: Registrar Abuse Contact Email: Registrar Abuse Contact Phone: Domain Status: available Name Server: DNSSEC: unsigned

Key Indicator: Domain Status: available

Action: This domain can be registered

🔒 Registered Domain

WHOIS response for a registered domain:

Domain Name: EXAMPLE.COM Registry Domain ID: 2336799_DOMAIN_COM-VRSN Registrar WHOIS Server: whois.registrar.example Registrar URL: http://www.registrar.example Updated Date: 2023-05-15T10:13:12Z Creation Date: 1995-08-15T04:00:00Z Registry Expiry Date: 2024-08-14T04:00:00Z Registrar: Example Registrar, Inc. Registrar IANA ID: 1234 Registrar Abuse Contact Email: abuse@registrar.example Registrar Abuse Contact Phone: +1.1234567890 Domain Status: ok Name Server: NS1.EXAMPLE-DNS.COM Name Server: NS2.EXAMPLE-DNS.COM DNSSEC: signed

Key Information: Creation date, expiry date, registrar

Status: Domain is active and registered

🛡️ Privacy Protected

WHOIS response with privacy protection:

Domain Name: PRIVACYEXAMPLE.COM Registry Domain ID: 12345678_DOMAIN_COM-VRSN Registrar WHOIS Server: whois.registrar.example Registrar URL: http://www.registrar.example Updated Date: 2023-06-20T15:30:45Z Creation Date: 2020-03-10T10:20:30Z Registry Expiry Date: 2025-03-10T10:20:30Z Registrar: Example Registrar, Inc. Registrar IANA ID: 1234 Registrar Abuse Contact Email: abuse@registrar.example Registrar Abuse Contact Phone: +1.1234567890 Domain Status: clientTransferProhibited Name Server: NS1.PRIVACYDNS.COM Name Server: NS2.PRIVACYDNS.COM DNSSEC: unsigned Registrant Name: REDACTED FOR PRIVACY Registrant Organization: Privacy service provided by Registrar Registrant Street: REDACTED FOR PRIVACY Registrant City: REDACTED FOR PRIVACY Registrant State/Province: REDACTED FOR PRIVACY Registrant Postal Code: REDACTED FOR PRIVACY Registrant Country: REDACTED FOR PRIVACY Registrant Phone: REDACTED FOR PRIVACY Registrant Phone Ext: REDACTED FOR PRIVACY Registrant Fax: REDACTED FOR PRIVACY Registrant Fax Ext: REDACTED FOR PRIVACY Registrant Email: PLEASE CONTACT WHOIS@REGISTRAR.EXAMPLE

Privacy Feature: Contact information is hidden

Registrant: Protected by privacy service

⚠️ Expiring Soon

WHOIS response for a domain expiring soon:

Domain Name: EXPIRINGEXAMPLE.COM Registry Domain ID: 87654321_DOMAIN_COM-VRSN Registrar WHOIS Server: whois.registrar.example Registrar URL: http://www.registrar.example Updated Date: 2023-09-01T08:45:12Z Creation Date: 2022-09-15T12:30:00Z Registry Expiry Date: 2023-09-14T12:30:00Z Registrar: Example Registrar, Inc. Registrar IANA ID: 1234 Registrar Abuse Contact Email: abuse@registrar.example Registrar Abuse Contact Phone: +1.1234567890 Domain Status: ok Name Server: NS1.EXAMPLE-DNS.COM Name Server: NS2.EXAMPLE-DNS.COM DNSSEC: unsigned Registrant Name: John Smith Registrant Organization: Example Company LLC Registrant Street: 123 Main Street Registrant City: New York Registrant State/Province: NY Registrant Postal Code: 10001 Registrant Country: US Registrant Phone: +1.5551234567 Registrant Email: john@examplecompany.com

Warning: Domain expires in less than 30 days

Action: Renewal needed to maintain ownership

📚 WHOIS Tutorials

🌐

Understanding WHOIS: A Complete Guide

Learn the fundamentals of WHOIS protocol, how it works, and why it's essential for domain research.

Read Tutorial →
🔒

WHOIS Privacy Protection Explained

Understand how WHOIS privacy services work and when you should consider using them for your domains.

Read Tutorial →
⚡

Advanced WHOIS Lookup Techniques

Learn advanced patterns, bulk lookups, and automation techniques for efficient domain research.

Read Tutorial →
🔍

Domain Research and Due Diligence

How to use WHOIS data for domain research, acquisition, and due diligence processes.

Read Tutorial →
📊

Monitoring Domain Changes with WHOIS

Tools and techniques for monitoring domain changes, expirations, and ownership transfers.

Read Tutorial →
🛡️

WHOIS and Security Considerations

How to use WHOIS data for security research and protecting your organization from domain-based threats.

Read Tutorial →

⚖️ WHOIS Lookup Tool Comparison

Compare our free WHOIS lookup tool with other popular tools and services:

Feature Our Tool Tool A Tool B Tool C
Free to Use ✅ ✅ ❌ (Premium) ✅
Bulk Lookups ✅ ✅ ✅ ❌
Custom WHOIS Server ✅ ❌ ✅ ❌
TLD Support ✅ ✅ ✅ ❌
Export Results ✅ ❌ ✅ ❌
Lookup History ✅ ✅ ✅ ❌
Mobile Friendly ✅ ✅ ✅ ✅
Educational Content ✅ ❌ ❌ ❌
Real-time Results ✅ ✅ ✅ ❌

Why Choose Our WHOIS Lookup Tool?

🔧 Comprehensive Domain Data

Get detailed information including registration dates, expiration, registrar, nameservers, and contact details.

📊 Advanced Analysis

Receive domain health scores, expiration warnings, and privacy protection status analysis.

🚀 Fast & Reliable

Uses multiple WHOIS servers for reliable lookups with fast response times.

🎓 Educational Focus

Not just a tool - includes comprehensive guides, examples, and tutorials to help you understand WHOIS data.

📝 Version History & Changelog

Version 2.1.0 - Latest

September 15, 2025
  • 🎉 Added TLD options for domain availability checking
  • 📊 Enhanced WHOIS data analysis and visualization
  • 📱 Improved mobile responsiveness and touch interactions
  • 🔧 Added embed code functionality for easy integration
  • 📚 Expanded educational content and examples
  • 🎨 Updated UI with better accessibility and contrast

Version 2.0.0

August 20, 2025
  • 🔄 Complete UI redesign with modern styling
  • 📚 Added comprehensive tutorial section
  • 📝 Introduced tabbed navigation for better organization
  • ⚖️ Added tool comparison feature
  • 💾 Implemented download functionality for WHOIS results
  • 📋 Enhanced copy functionality with better feedback

Version 1.2.0

July 10, 2025
  • ✅ Added custom WHOIS server support
  • 🛡️ Improved privacy protection detection
  • 📖 Added real-world examples and use cases
  • 🐛 Fixed parsing issues for certain TLDs
  • ♿ Enhanced accessibility with ARIA labels

Version 1.1.0

June 5, 2025
  • 🎨 Improved visual design with gradient backgrounds
  • 📱 Added responsive design for mobile devices
  • ⚠️ Added warnings for expiring domains
  • 📋 Implemented one-click copy functionality
  • 🔧 Fixed layout issues on smaller screens

Version 1.0.0

May 15, 2025
  • 🎉 Initial release of WHOIS Lookup Tool
  • 🔍 Support for basic WHOIS lookups
  • ⚡ Real-time results and validation
  • 📚 Comprehensive documentation and examples
  • ✨ Clean, modern user interface

🔮 Upcoming Features

📋 Planned for Next Release:

  • Bulk WHOIS lookup for multiple domains
  • Historical WHOIS data tracking and changes
  • Domain monitoring and alert system
  • Advanced domain research and analytics
  • Dark/Light theme toggle
  • API access for developers
  • Browser extension for quick lookups

What is WHOIS?

WHOIS (pronounced "who is") is a query and response protocol used for querying databases that store registered users or assignees of internet resources, such as domain names, IP address blocks, and autonomous systems. It's essentially the phonebook of the internet.

🟢 Benefits of Using WHOIS

✅ Advantages of WHOIS Data:

  • Domain Research: Investigate domain ownership and registration history
  • Due Diligence: Verify domain information before acquisition
  • Legal Protection: Identify domain owners for legal matters
  • Security Monitoring: Track domains associated with security threats
  • Market Research: Analyze competitor domains and strategies
  • Expiration Tracking: Monitor domains that may become available

🔴 Common WHOIS Limitations

❌ WHOIS Limitations to Consider:

  • Privacy protection services hide contact information
  • Data accuracy depends on registrar and registrant
  • Different TLDs have different WHOIS formats
  • Rate limiting may apply to frequent queries
  • Some country-code TLDs restrict access to WHOIS data
  • GDPR regulations have reduced publicly available data

Key WHOIS Data Fields

📅 Registration Dates

Creation, update, and expiration dates show domain lifecycle and ownership duration.

🏢 Registrar Information

Details about the company that registered the domain on behalf of the owner.

👤 Contact Details

Registrant, administrative, and technical contact information (may be private).

🌐 Nameservers

DNS servers responsible for the domain's DNS records and website hosting.

🔒 Domain Status

Indicates if domain is active, suspended, pending transfer, or has other restrictions.

🛡️ Privacy Status

Shows whether contact information is publicly visible or protected by privacy services.

How WHOIS Works

When you perform a WHOIS lookup, the process works as follows:

  1. Query: Your tool sends a WHOIS query to the appropriate WHOIS server
  2. Server Identification: The system identifies the correct WHOIS server based on TLD
  3. Database Query: The WHOIS server queries its registration database
  4. Data Retrieval: The server retrieves the domain registration information
  5. Response: The server returns the WHOIS data in standardized format
  6. Parsing: The tool parses and formats the data for display
  7. Analysis: Additional analysis is performed on the retrieved data
  8. Display: The formatted results are displayed to the user

Best Practices for WHOIS Lookups

🔍 Recommended Domain & Research Tools

Enhance your domain research and management with these trusted tools and services:

ICANN Lookup

Official Domain Database

Namecheap

Domain Registration

GoDaddy

Domain & Hosting

DomainTools

Domain Research

WHOIS History

Historical Domain Data