Compare software

ViewDNS.infoDomainTools Whois Lookup
Freemium

The web tools are free; API access and research data are sold on paid plans.

 Freemium

Basic lookups are free, with deeper history and reverse WHOIS research on paid plans.

Web Web
  • Many DNS, WHOIS and IP tools in one place
  • Historical data such as IP history and reverse WHOIS
  • Domain ownership and IP address history in one lookup
  • Shows whether a domain is available or for sale
  • Some features such as dark mode need an account
  • API and data products are paid
  • Free tier is limited
  • Historical and reverse lookups are aimed at paying users
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

Checked September 23, 2026

Checked September 23, 2026

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