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Whois.com Lookup vs DomainTools Whois Lookup: catalog facts
Whois.com Lookup	DomainTools Whois Lookup
Free Lookups are free on the website.	Freemium Basic lookups are free, with deeper history and reverse WHOIS research on paid plans.
Web	Web
Looks up both domain names and IP addresses Shows registrar, dates and nameservers in one result	Domain ownership and IP address history in one lookup Shows whether a domain is available or for sale
Owner details depend on what the registry publishes and are often redacted	Free tier is limited Historical and reverse lookups are aimed at paying users
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is 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.