Whoisology
Whoisology: A focused research tool for tracing domain ownership, connections, and historical records. Ranked #3 of 25 in Reverse WHOIS Search Tools by our editors (9.0/10); pricing: Free plan; best for researchers needing historical ownership exploration.
At a glance
- Editor score9.0 / 10
- PricingFree plan
- Best forResearchers needing historical ownership exploration
- Free planYes
- Paid from$300/yr
- Historical recordsYes
- Facts checked21 Sep 2026
Where it wins
- Free access includes reverse and historical WHOIS research
- Connected-domain exploration links domains through WHOIS fields
- Paid plans add reports, bulk search, and API credits
Where it doesn't
- Visitor access is limited to a number of results per day
- Advanced historical access requires a paid membership
- Higher report and API allowances are reserved for pricier tiers
Our verdict on Whoisology
Whoisology is a web-based reverse WHOIS and domain ownership archive for researchers investigating domains, organizations, and historical ownership connections. Its searches can use domain terms and WHOIS fields, including person and email searches, while archived records support information-security investigations, corporate intelligence, legal research, business development, and related domain research. The service is available through the web and an API, with bulk search for lists of up to 5,000 domains.
Pricing follows a freemium structure. The free Visitor plan provides basic access with a limited number of results per day. Beginner costs $30 per month or $300 per year and adds no ads, no data redaction, historic data across 7 archives, 2 change log reports, 2 basic download reports, and 500 API credits per month. Advanced costs $90 per month or $900 per year, with historic data access, 6 change log reports, 6 basic download reports, and 1,750 API credits per month. Legendary costs $270 per month or $2,700 per year and adds full historic data access, 20 change log reports, 20 basic download reports, and 5,500 API credits per month. Paid plans also include no ads and no data redaction.
The strongest fit is for work that depends on ownership history rather than a one-time WHOIS lookup. Archive selection across gTLD and ccTLD data, change logs comparing records, connected-domain exploration, and basic or bulk report downloads give researchers several ways to follow relationships and document findings. API credits make paid memberships more suitable for repeatable workflows, while the free Visitor plan is a practical entry point for limited daily research. Choose Whoisology when historical records, field-based connections, and bulk investigation matter; choose an alternative when occasional lookups are enough or when a limited daily result allowance does not fit the workflow.
Your product? Our editors can test Whoisology in depth and publish a review, labelled as paid · from $149/mo →
Whoisology pricing
All 4 Whoisology plans and prices →
Whoisology fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $300/yr |
| Person/name search | Yes |
| Organization search | Not verified |
| Email search | Yes |
| Historical records | Yes |
| Bulk search | Yes |
| API access | Yes |
| Result limit | 1000 results |
| Deployment | Cloud |
| Platforms | Web |
| Support | |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan (source) |
| Website | whoisology.com |
| Facts checked | 21 Sep 2026 |
Alternatives to Whoisology
- 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
- DomainIQA broad domain-intelligence toolkit for professional investigations and monitoring.8.8
See all Whoisology alternatives →
Whoisology vs the competition
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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 Whoisology 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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