14 IPAddress.to alternatives in 2026
Other providers sell domain WHOIS APIs like IPAddress.to's. Enterno, How.is and Robtex each cost $0.00 per 1,000 domains.
Domain WHOIS API alternatives
On our IPAddress.to plan pages, we compare each IPAddress.to plan with other providers' plans. We list other providers' plans below, cheapest per 1,000 domains first.
| Provider and plan | $ per 1,000 domains |
|---|---|
| Enterno, free, Scout | $0.00 |
| How.is, free | $0.00 |
| Robtex, free | $0.00 |
| WhoisFreaks, free, POST /v2.0/bulkwhois/live | $0.00 |
Compare every domain WHOIS API plan: Domain WHOIS API pricing: free and cheapest plans compared
Email verification API alternatives
On our IPAddress.to plan pages, we compare each IPAddress.to plan with other providers' plans. We list other providers' plans below, cheapest per 1,000 emails first.
| Provider and plan | $ per 1,000 emails |
|---|---|
| Enrich.so, free, POST /email-validation | $0.00 |
| FindEmails.com, free | $0.00 |
| Giggal, free trial, POST /v1/verify-batch | $0.00 |
| KaijuVerifier, free, POST /api/v1/jobs, Submit an async bulk job with the SMTP probe | $0.00 |
| MailTester Ninja, free, No token | $0.00 |
Compare every email verification API plan: Email verification API pricing: free and cheapest plans compared
IP company lookup API alternatives
On our IPAddress.to plan pages, we compare each IPAddress.to plan with other providers' plans. We list other providers' plans below, cheapest per 1,000 IP addresses first.
| Provider and plan | $ per 1,000 IP addresses |
|---|---|
| DNSlytics, free | $0.00 |
| IP-API.com, free, POST /batch | $0.00 |
| IPBot, free, Anonymous, GET /v1/ip/{ip} | $0.00 |
| ip.sb, free | $0.00 |
| ipwhois.io, free | $0.00 |
Compare every IP company lookup API plan: IP company lookup API pricing: free and cheapest plans compared