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SecurityTrailsViewDNS.info
Freemium

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

 Freemium

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

Web Web
  • Historical DNS and WHOIS records going back years
  • Subdomain and associated domain discovery
  • Many DNS, WHOIS and IP tools in one place
  • Historical data such as IP history and reverse WHOIS
  • Requires an account to use
  • Oriented towards business security teams rather than casual users
  • Some features such as dark mode need an account
  • API and data products are paid
Web application, Hosted service Web application, Hosted service
Closed source Closed source
License not stated License not stated
Account needed No account needed
Needs internet Needs internet

Checked October 1, 2026

Checked September 23, 2026

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