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WhoxySecurityTrails
Freemium

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

 Freemium

An API key is available on sign-up; larger data services are aimed at security teams.

Web Web
  • Reverse WHOIS by owner, company, email or keyword
  • WHOIS history lookups
  • Historical DNS and WHOIS records going back years
  • Subdomain and associated domain discovery
  • Mainly built around a paid API for developers
  • Bulk data such as the full database is expensive
  • Requires an account to use
  • Oriented towards business security teams rather than casual users
Web application, Hosted service Web application, Hosted service
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Account needed
Needs internet Needs internet

Checked September 23, 2026

Checked October 1, 2026

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