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ViewDNS.info vs ICANN Lookup: catalog facts
ViewDNS.info	ICANN Lookup
Freemium The web tools are free; API access and research data are sold on paid plans.	Free Free public lookup service run by ICANN.
Web	Web
Many DNS, WHOIS and IP tools in one place Historical data such as IP history and reverse WHOIS	Run by ICANN rather than a registrar or advertiser Uses RDAP instead of scraping WHOIS
Some features such as dark mode need an account API and data products are paid	Only shows registration data, with no DNS or mail diagnostics
Web application, Hosted service	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.