Lookup vs Whoisology

Lookup

lookup.icann.org

Analyzed October 14, 2026

Depends

Confidence: Low

ICANN Lookup is a free public tool for checking a domain's registration data, not a commercial product.

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Whoisology

whoisology.com

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Depends Lookup Pending Whoisology Independent comparison on Should I Use It

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Pick Lookup when

Pre-purchase domain checks
Verifying a site's registrar and owner
Phishing and spam domain triage
One-off lookups by IT or legal

When Lookup is not a fit

Teams needing bulk or automated domain lookups
Developers wanting a supported API with SLAs
Buyers of phone, email, or people search tools (different products)
Anyone expecting vendor support or a contract

Sources

Lookup, ICANNlookup.icann.org
official
Product security pagelookup.icann.org
official
Read Customer Service Reviews of reverselookup.comuk.trustpilot.com
review
Lookup, Crunchbase Company Profile & Fundingcrunchbase.com
official