Quick Facts
- Category
- WHOIS and RDAP APIs, DNS and infrastructure APIs, Company, identity, and social intelligence APIs
- Website
- whoisxmlapi.com
- Pricing Starts At
- $30/month for 2,000 WHOIS queries
- Free Tier
- 500 WHOIS queries, no card required
- TLD Coverage
- 7,500+ TLDs
- Enterprise Plan
- $3,600/month for 2 million queries; unlimited custom
Pros & Cons
✓ Pros
- Industry-leading TLD coverage (7,596+ TLDs)
- Comprehensive threat intelligence suite
- Historical WHOIS and DNS data
- Strong enterprise focus with Fortune 500 clients
- Responsive customer support
- MCP server available
− Cons
- Complex credit-based pricing structure
- Overkill for simple availability checks
- Rate limit of 50 requests/second max
- Steeper learning curve
- Free tier limited to 500 queries
🎯 Our Verdict
WhoisXML API is a powerhouse for enterprise security and comprehensive domain intelligence. The TLD coverage is unmatched, and the threat intelligence features are top-tier. However, the complexity and pricing make it less suitable for simple developer projects or startups.
Best For: Security teams, threat researchers, compliance departments, large enterprises
Not Recommended For: Simple availability checking, budget projects, casual developers
Key Features
📋
WHOIS API
Live and historical WHOIS lookups
🔍
DNS Lookup
Comprehensive DNS record queries
🔄
Reverse WHOIS
Search by registrant details
🔔
Brand Alert
Monitor brand mentions in domains
Pricing
| Tier | Price | Credits/Requests |
|---|---|---|
| Free | 500 WHOIS queries, no card required | Variable |
| Starter | $30/month for 2,000 WHOIS queries | Variable |
| Enterprise | $3,600/month for 2 million queries; unlimited custom | Variable |
Sources
Last updated:
WhoisXML API vs DomScan
| Feature | WhoisXML API | DomScan |
|---|---|---|
| Free Tier | Limited | ✓ 10,000/month |
| Domain Availability | ✓ | ✓ |
| WHOIS Data | ✓ | ✓ |
| DNS Lookup | ✓ | ✓ |
| Domain Valuation | − | ✓ |
| Brand Monitoring | Premium | ✓ |
| MCP/AI Integration | ✓ | ✓ |
| Bulk Operations | ✓ | ✓ |
