Overview
DomainTools
Enterprise Domain Intelligence & Threat Research
DomainTools focuses on high-end security workflows with passive DNS, reputation scoring, historical data, and enterprise investigation products.
No free tierRDAP API
RDAP-first domain, IP, and ASN lookup API
RDAP API centers on RDAP lookups for domains, IP ranges, and ASNs for teams that want structured registration data without buying a larger intelligence platform.
Trial accessPricing Comparison
| Pricing | DomainTools | RDAP API |
|---|---|---|
| Free Tier | No free tier | Trial access |
| Paid Plans | Custom enterprise contracts | Usage-based API plans |
| Enterprise | Annual platform subscriptions | Higher-volume options |
| TLD Coverage | Hundreds of millions of domains tracked | RDAP-enabled registries |
Feature Comparison
| Feature | DomainTools | RDAP API |
|---|---|---|
| Free Tier | Not Included | Limited |
| API Access | Included | Included |
| Bulk Operations | Included | Limited |
| Real-time Data | Included | Included |
| WHOIS Data | Included | Included |
| DNS Lookup | Included | Not Included |
| Domain Valuation | Included | Not Included |
| Brand Monitoring | Premium Only | Not Included |
| MCP/AI Integration | Not Included | Not Included |
Which is Better?
Choose DomainTools if you need
- Decades of historical WHOIS data
- Advanced threat intelligence
- Iris, DNSDB, and monitoring products
Choose RDAP API if you need
- Focused RDAP experience for domains, IPs, and ASNs
- Cleaner fit for modern registration-data workflows
- Good option for teams that do not need a huge platform
Consider DomScan Instead
DomScan offers the best of both worlds with comprehensive features and developer-friendly pricing.
- ✓ Free tier: 10,000 credits/month (no credit card)
- ✓ 1,500+ TLDs supported
- ✓ MCP integration for AI assistants
- ✓ Domain valuation, brand monitoring, OSINT
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