# 14 IPAddress.to alternatives in 2026

Last updated: November 7, 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](https://datacircle.dev/domain-whois-apis/ipaddress-to/free), we compare each IPAddress.to plan with other providers' plans. We list other providers' plans below, cheapest per 1,000 domains first.

- [Enterno, free, Scout](https://datacircle.dev/domain-whois-apis/enterno/free-scout): $0.00 per 1,000 domains
- [How.is, free](https://datacircle.dev/domain-whois-apis/how-is/free): $0.00 per 1,000 domains
- [Robtex, free](https://datacircle.dev/domain-whois-apis/robtex/free): $0.00 per 1,000 domains
- [WhoisFreaks, free, POST /v2.0/bulkwhois/live](https://datacircle.dev/domain-whois-apis/whoisfreaks/free-post-v2-0-bulkwhois-live): $0.00 per 1,000 domains

Compare every domain WHOIS API plan: [Domain WHOIS API pricing: free and cheapest plans compared](https://datacircle.dev/domain-whois-api-pricing)

## Email verification API alternatives

On our [IPAddress.to plan pages](https://datacircle.dev/validate-email-apis/ipaddress-to/free), we compare each IPAddress.to plan with other providers' plans. We list other providers' plans below, cheapest per 1,000 emails first.

- [Enrich.so, free, POST /email-validation](https://datacircle.dev/validate-email-apis/enrich-so/free): $0.00 per 1,000 emails
- [FindEmails.com, free](https://datacircle.dev/validate-email-apis/findemails-com/free): $0.00 per 1,000 emails
- [Giggal, free trial, POST /v1/verify-batch](https://datacircle.dev/validate-email-apis/giggal/free-trial-post-v1-verify-batch): $0.00 per 1,000 emails
- [KaijuVerifier, free, POST /api/v1/jobs, Submit an async bulk job with the SMTP probe](https://datacircle.dev/validate-email-apis/kaijuverifier/free-free-post-api-v1-jobs): $0.00 per 1,000 emails
- [MailTester Ninja, free, No token](https://datacircle.dev/validate-email-apis/mailtester-ninja/free-no-token): $0.00 per 1,000 emails

Compare every email verification API plan: [Email verification API pricing: free and cheapest plans compared](https://datacircle.dev/email-verification-api-pricing)

## IP company lookup API alternatives

On our [IPAddress.to plan pages](https://datacircle.dev/ip-company-lookup-apis/ipaddress-to/free-get-score-ip-or-hostname), we compare each IPAddress.to plan with other providers' plans. We list other providers' plans below, cheapest per 1,000 IP addresses first.

- [DNSlytics, free](https://datacircle.dev/ip-company-lookup-apis/dnslytics/free): $0.00 per 1,000 IP addresses
- [IP-API.com, free, POST /batch](https://datacircle.dev/ip-company-lookup-apis/ip-api-com/free-post-batch): $0.00 per 1,000 IP addresses
- [IPBot, free, Anonymous, GET /v1/ip/{ip}](https://datacircle.dev/ip-company-lookup-apis/ipbot/free-anonymous-get-v1-ip-ip): $0.00 per 1,000 IP addresses
- [ip.sb, free](https://datacircle.dev/ip-company-lookup-apis/ip-sb/free): $0.00 per 1,000 IP addresses
- [ipwhois.io, free](https://datacircle.dev/ip-company-lookup-apis/ipwhois-io/free): $0.00 per 1,000 IP addresses

Compare every IP company lookup API plan: [IP company lookup API pricing: free and cheapest plans compared](https://datacircle.dev/ip-company-lookup-api-pricing)