Compare software

DomainTools Whois LookupWhoxy
Freemium

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

 Freemium

Free account with no monthly fee; API queries are pay as you go, from $10 for 5,000 WHOIS…

Web Web
  • Domain ownership and IP address history in one lookup
  • Shows whether a domain is available or for sale
  • Reverse WHOIS by owner, company, email or keyword
  • WHOIS history lookups
  • Free tier is limited
  • Historical and reverse lookups are aimed at paying users
  • Mainly built around a paid API for developers
  • Bulk data such as the full database is expensive
Web application Web application, Hosted service
Closed source Closed source
License not stated License not stated
Not stated if an account is 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.