WhoisJSON
Worth it
Confidence: Medium
Buy if you're a developer or small team needing WHOIS/DNS/SSL data in code . the free 1,000 requests/month makes trialing it risk-free.
New check
Comparison
WhoisJSON vs SecurityTrails
WhoisJSON lands on Worth it, and SecurityTrails lands on Depends.
SecurityTrails
Depends
Confidence: Medium
Buy if you do security research, bug bounty, or attack surface mapping and will actually use the API weekly.
| Compare | WhoisJSON | SecurityTrails |
|---|---|---|
| Verdict | Worth it | Depends |
| Best for | Developers building domain checks | Bug bounty hunters |
| Who it's not for | Non-technical buyers . it's a raw API, no GUI | Casual users needing occasional domain lookups |
| Privacy | No known public vulnerabilities found in the sources reviewed.⁹ | No known public vulnerabilities found in the sources reviewed. |
| Support quality | No support evidence in sources | No usable evidence in sources |
| Public sentiment | Independent coverage is thin, but a Reddit developer praised the free tier while building a domain monitoring tool on it.⁸ | OSINT researchers and bug bounty hunters consistently recommend SecurityTrails, while some Reddit users point to free alternatives over the paid tiers. |
| Biggest gotcha | 1,000 free calls/month disappears fast in production; growth pushes you to paid plans³ | Enterprise pricing is negotiate-with-sales; no list prices anywhere |
Pick WhoisJSON when
- Developers building domain checks
- Fraud and phishing investigation
- Domain portfolio monitoring
- AI agent workflows via MCP
When WhoisJSON is not a fit
- Non-technical buyers . it's a raw API, no GUI
- Enterprises needing DomainTools-grade threat intel
- One-off lookups . free whois/DNS tools already exist
- Guess: teams requiring SLAs or compliance attestations
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
- WhoisJSON homepagewhoisjson.comofficial
- WhoisJSON pricingwhoisjson.comofficial
- Free WHOIS API . 1,000 monthly requestswhoisjson.comofficial
- Product security pagewhoisjson.comofficial
- DomainTools alternative comparisonwhoisjson.comofficial
- WHOIS API rate limits and 429 handlingwhoisjson.comofficial
- WhoisJSON API Review (2026)itechguides.comreview
review
- Gridinsoft trust scangridinsoft.comsecurity
- WHOISJSON alternatives and comparisonsdomscan.netreview
- Integrately WhoisJSON integrationsintegrately.comreview
- MindCloud WhoisJSON integrationsmindcloud.coreview
- WhoisJSON MCP servermcp.soofficial
- APILayer marketplace listingmarketplace.apilayer.comreview
- Recorded Future Acquires SecurityTrails in $65M Dealsecurityweek.comnews
- Recorded Future acquires SecurityTrailstechcrunch.comnews