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Comparison

WhoAPI Inc. vs SecurityTrails

WhoAPI Inc. and SecurityTrails both land on Depends.

WhoAPI Inc. versus SecurityTrails
CompareWhoAPI Inc.SecurityTrails
VerdictDependsDepends
Best forDev teams needing Whois data via APIBug bounty hunters
Who it's not forNon-technical users wanting simple lookupsCasual users needing occasional domain lookups
PrivacyNo known public vulnerabilities found in the sources reviewed.⁷No known public vulnerabilities found in the sources reviewed.
Support qualityFAQ and tickets exist; quality unverifiedNo usable evidence in sources
Public sentimentIndependent reviews are scarce; Facebook aggregates 7 reviews at 100% recommend, with no substantial third-party review content found.³OSINT researchers and bug bounty hunters consistently recommend SecurityTrails, while some Reddit users point to free alternatives over the paid tiers.
Biggest gotchaPer-API, per-request pricing structure; heavy-volume costs can balloon . get a written quote.⁵Enterprise pricing is negotiate-with-sales; no list prices anywhere

Pick WhoAPI Inc. when

  • Dev teams needing Whois data via API
  • Teams screening domain availability at scale
  • Security teams watching blacklists and new domains
  • Email/hosting companies checking domain reputation

When WhoAPI Inc. is not a fit

  • Non-technical users wanting simple lookups
  • Buyers needing a registrar or DNS host . this sells data only
  • Teams requiring SOC 2 or public security documentation
  • Anyone wanting a heavily-reviewed, enterprise-scale vendor

Pick SecurityTrails when

  • Bug bounty hunters
  • OSINT researchers
  • Attack surface mapping teams
  • Threat intel API integrations

When SecurityTrails is not a fit

  • Casual users needing occasional domain lookups
  • Buyers wanting transparent published pricing
  • Small teams without engineering or API skills
  • One-time recon tasks . free tools may suffice

Sources

  1. WhoAPI homepagewhoapi.com
    official
  2. WhoAPI on Serchenserchen.co.uk
    review
  3. WhoAPI Facebook pagefacebook.com
    review
  4. WhoAPI on APIs.ioapis.io
    review
  5. Domain Age API pricingwhoapi.com
    official
  6. WhoAPI FAQwhoapi.com
    official
  7. WhoAPI security page checkwhoapi.com
    security
  8. Enhanced Password Security Measures at WhoAPIwhoapi.com
    security
  9. WhoAPI case studieswhoapi.com
    official
  10. 15 Years of Domain Data: From WHOIS to RDAPwhoapi.com
    official
  11. Recorded Future Acquires SecurityTrails in $65M Dealsecurityweek.com
    news
  12. Recorded Future acquires SecurityTrailstechcrunch.com
    news
  13. SecurityTrails Reviews on G2 (seller)g2.com
    review
  14. Which paid cybersecurity tools are ridiculously overpricedreddit.com
    review
  15. HackerOne $1M bounty AMA mentioning SecurityTrailsreddit.com
    review
  16. Top 5 OSINT Sources for Penetration Testing and Bug Bountiesintel471.com
    review