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ICANN Lookup vs Whois.com Lookup: catalog facts
ICANN Lookup	Whois.com Lookup
Free Free public lookup service run by ICANN.	Free Lookups are free on the website.
Web	Web
Run by ICANN rather than a registrar or advertiser Uses RDAP instead of scraping WHOIS	Looks up both domain names and IP addresses Shows registrar, dates and nameservers in one result
Only shows registration data, with no DNS or mail diagnostics	Owner details depend on what the registry publishes and are often redacted
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.