WhoisFreaks Reverse WHOIS API
WhoisFreaks Reverse WHOIS API: A developer-ready reverse WHOIS API with historical searches, SDKs, and workflow integrations. Ranked #12 of 25 in Reverse WHOIS Search Tools by our editors (8.0/10); pricing: Paid; best for developer teams needing SDK-ready API access.
At a glance
- Editor score8.0 / 10
- PricingPaid
- Best forDeveloper teams needing SDK-ready API access
- Free planNo
- Paid from$75/mo
- Historical recordsYes
- Facts checked21 Sep 2026
Where it wins
- Search by email, registrant name, company, or domain keyword
- Historical WHOIS data with wildcard and regex-style email matching
- JSON/XML output, SDKs, and integrations for developer workflows
Where it doesn't
- No free plan for evaluating the API
- Unused monthly credits expire after one month
- API-only access may not suit users seeking a visual interface
Our verdict on WhoisFreaks Reverse WHOIS API
WhoisFreaks Reverse WHOIS API is a paid API for finding domains associated with email addresses, registrant names, company names, and domain keywords. Its historical WHOIS searches return paginated results in JSON or XML, making it relevant to security investigations, brand protection, domain portfolio analysis, threat intelligence, competitive research, and due diligence. The product is particularly suited to developer teams that need reverse WHOIS data inside applications, scripts, or automated workflows rather than through a standalone visual search interface.
Pricing is structured around API credits. The Monthly Subscription costs $75 per month and includes 50,000 API credits; unused credits expire after one month. The Yearly Subscription costs $1,500 per year and includes 50,000 API credits per month, with credits expiring after one year. The API Credits option costs $150 one time for 50,000 credits, and those credits do not expire. There is no free plan, so teams should select a credit model based on whether usage is recurring, annual, or occasional. The published plans also show different expiration rules, which matter when estimating how much of an allocation can be used over time.
The API’s strongest fit is its combination of search depth and integration coverage. In addition to exact and pattern-based email searches, it supports historical records, pagination, and wildcard or regex-style email matching. Official SDKs cover Python, JavaScript, TypeScript, Java, Kotlin, C#/.NET, Ruby, Go, and Swift, while workflow connections include Microsoft Security Copilot, Make, MISP, MCP Server, Postman, and n8n. Choose it when reverse WHOIS data needs to feed developer tools, investigations, or automated processes. Consider an alternative if you need a free evaluation tier or a browser-first product experience.
Your product? Our editors can test WhoisFreaks Reverse WHOIS API in depth and publish a review, labelled as paid · from $149/mo →
WhoisFreaks Reverse WHOIS API pricing
All 3 WhoisFreaks Reverse WHOIS API plans and prices →
WhoisFreaks Reverse WHOIS API fact sheet
| Free plan | No |
|---|---|
| Paid from | $75/mo |
| Person/name search | Yes |
| Organization search | Yes |
| Email search | Yes |
| Historical records | Yes |
| Bulk search | Not verified |
| API access | Yes |
| Result limit | 100 results |
| Deployment | Cloud |
| Compliance & security | GDPR |
| Support | Email, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 16 integrations: Microsoft Security Copilot, Make, MISP, MCP Server, Postman, n8n … See all → |
| Pricing | Paid (source) |
| Website | whoisfreaks.com |
| Facts checked | 21 Sep 2026 |
WhoisFreaks Reverse WHOIS API integrations
WhoisFreaks Reverse WHOIS API lists 16 integrations on its own site.
- Microsoft Security Copilot
- Make
- MISP
- MCP Server
- Postman
- n8n
- Python
- JavaScript
- TypeScript
- Java
- Kotlin
- C#/.NET
- Ruby
- Go
- Swift
- PHP
See all WhoisFreaks Reverse WHOIS API integrations →
Alternatives to WhoisFreaks Reverse WHOIS API
- WhoisXML API Reverse WHOISA flexible reverse-WHOIS service for current, historical, and large-scale domain investigations.9.4
- WhoxyA broad WHOIS data service for high-volume API, reverse search, and bulk lookup work.9.2
- WhoisologyA focused research tool for tracing domain ownership, connections, and historical records.9.0
See all WhoisFreaks Reverse WHOIS API alternatives →
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The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used WhoisFreaks Reverse WHOIS API for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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