Overview
Which of these two providers fits my workload?
DomainTools
Enterprise Domain Intelligence & Threat Research
DomainTools focuses on high-end security workflows with passive DNS, reputation scoring, historical data, and enterprise investigation products.
Free Novice account with limited web lookups; no APIMxToolBox
Email Security & DNS Diagnostic Tools
MxToolBox specializes in email deliverability tools including MX lookups, blacklist monitoring, SPF/DKIM/DMARC validation, and DNS diagnostics.
Free weekly blacklist monitoring for one domainPricing Comparison
Watch out for: Credits, pages, requests, records, compute units, subscriptions, and browser-time blocks are not interchangeable.
| Pricing | DomainTools | MxToolBox |
|---|---|---|
| Free Tier | Free Novice account with limited web lookups; no API | Free weekly blacklist monitoring for one domain |
| Paid Plans | $99/month individual membership, web access only | $129/month Delivery Center |
| Enterprise | API and enterprise access are custom priced | $399/month Delivery Center Plus |
| How usage is billed | Credits, pages, requests, records, compute units, subscriptions, and browser-time blocks are not interchangeable. | Credits, pages, requests, records, compute units, subscriptions, and browser-time blocks are not interchangeable. |
Feature Comparison
| Feature | DomainTools | MxToolBox |
|---|---|---|
| Free Tier | Not Included | Limited |
| API Access | Included | Included |
| Bulk Operations | Included | Included |
| Real-time Data | Included | Included |
| WHOIS Data | Included | Not Included |
| DNS Lookup | Included | Included |
| Domain Valuation | Included | Not Included |
| Brand Monitoring | Premium Only | Included |
| MCP/AI Integration | 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 MxToolBox if you need
- Best-in-class email diagnostics
- Blacklist monitoring
- SPF/DKIM/DMARC validation
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)
- ✓ 1,100+ TLDs supported
- ✓ MCP integration for AI assistants
- ✓ Domain valuation, brand monitoring, OSINT
Sources
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