Whoisology review
A focused research tool for tracing domain ownership, connections, and historical records.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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.
Whoisology pros and cons
- 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
Whoisology fact sheet, pricing and score →
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