5 RDAPAPI alternatives in 2026
Other providers sell domain WHOIS APIs like RDAPAPI's. WhoisJsonAPI costs $0.15 per 1,000 domains, Enterno $0.164 and WhoisJSON $0.167.
Domain WHOIS API alternatives
On our RDAPAPI plan pages, we compare each RDAPAPI plan with other providers' plans. We list other providers' plans below, cheapest per 1,000 domains first.
| Provider and plan | $ per 1,000 domains |
|---|---|
| WhoisJsonAPI, $299 monthly, Enterprise, GET /v1/{domain} | $0.15 |
| Enterno, ₽2,511 yearly | $0.164 |
| WhoisJSON, $300 yearly | $0.167 |
| HackerTarget, $2,400 yearly | $0.329 |
| domainIQ, $149.95 monthly, Expert, GET /api, 15,000 requests a day | $0.333 |
Compare every domain WHOIS API plan: Domain WHOIS API pricing: free and cheapest plans compared