Overview
Host.io
Domain Intelligence and Technology Detection API
Host.io focuses on technology fingerprints, related-domain discovery, DNS data, and web market intelligence rather than registrar workflows.
1,000 requests/month freeRDAP 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 | Host.io | RDAP API |
|---|---|---|
| Free Tier | 1,000 requests/month free | Trial access |
| Paid Plans | Plans from $99/month | Usage-based API plans |
| Enterprise | Custom enterprise plans | Higher-volume options |
| TLD Coverage | Top 10M domain dataset | RDAP-enabled registries |
Feature Comparison
| Feature | Host.io | RDAP API |
|---|---|---|
| Free Tier | Limited | Limited |
| API Access | Included | Included |
| Bulk Operations | Included | Limited |
| Real-time Data | Included | Included |
| WHOIS Data | Limited | Included |
| DNS Lookup | Included | Not Included |
| Domain Valuation | Not Included | Not Included |
| Brand Monitoring | Included | Not Included |
| MCP/AI Integration | Not Included | Not Included |
Which is Better?
Choose Host.io if you need
- Technology stack detection
- Related domains discovery
- Strong tie-in with the IPinfo ecosystem
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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