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ViewDNS.info vs Robtex: catalog facts
ViewDNS.info	Robtex
Freemium The web tools are free; API access and research data are sold on paid plans.	Free Lookups are free on the website.
Web	Web
Many DNS, WHOIS and IP tools in one place Historical data such as IP history and reverse WHOIS	Many lookup types from one search page Covers AS numbers and AS macros as well as domains and IPs
Some features such as dark mode need an account API and data products are paid	Web service only Research shows lookups rather than any monitoring or alerting
Web application, Hosted service	Web application
Closed source	Closed source
License not stated	License not stated
No account 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 24, 2026

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