# 7 Affiliate SMS alternatives in 2026

Last updated: November 9, 2026.

The best alternatives to Affiliate SMS for phone validation APIs: Trestle, Data247 and Abstract API, by our benchmark. Affiliate SMS's website is affiliate-sms.com.

## Phone validation API alternatives

[Trestle](https://datacircle.dev/validate-phone-apis/trestle/free#top-up-from-10-self-serve-pay-as-you-go-get-3-0-phone-intel-phone-validation-api), [Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone) and [Abstract API](https://datacircle.dev/validate-phone-apis/abstract-api/free#19-monthly-starter-5000-requests-month) are the best [phone validation API providers](https://datacircle.dev/best-phone-validation-api) in the Datacircle benchmark.

On our [Affiliate SMS plan pages](https://datacircle.dev/validate-phone-apis/affiliate-sms/free), we compare each Affiliate SMS plan with other providers' plans. We list other providers' plans below, cheapest per 1,000 phones first.

- [Abstract API, free](https://datacircle.dev/validate-phone-apis/abstract-api/free): $0.00 per 1,000 phones
- [Accurate Append, free](https://datacircle.dev/validate-phone-apis/accurate-append/free): $0.00 per 1,000 phones
- [Foxentry, free trial, POST /phone/validate, Validate phone number (basic)](https://datacircle.dev/validate-phone-apis/foxentry/free-trial-post-phone-validate-validate-phone-number-basic): $0.00 per 1,000 phones
- [HLR Lookups, free, 100 free lookups, POST /nt-lookups](https://datacircle.dev/validate-phone-apis/hlr-lookups/free-100-free-lookups-post-nt-lookups): $0.00 per 1,000 phones
- [Trestle, free trial, GET /3.0/phone_intel](https://datacircle.dev/validate-phone-apis/trestle/free): $0.00 per 1,000 phones
- [Addressfinder, contact us](https://datacircle.dev/validate-phone-apis/addressfinder/free#contact-us): no price per 1,000 phones
- [CallerAPI, contact us, Enterprise transparency $40,000+, GET /api/network-lookup/{phone}](https://datacircle.dev/validate-phone-apis/callerapi/free-trial-get-api-network-lookup-phone#contact-us-enterprise-transparency-40000-get-api-network-lookup-phone): no price per 1,000 phones

Compare every phone validation API plan: [Phone validation API pricing: free and cheapest plans compared](https://datacircle.dev/phone-validation-api-pricing)

## See also

- [Abstract API alternatives](https://datacircle.dev/abstract-api-alternatives)
- [Accurate Append alternatives](https://datacircle.dev/accurate-append-alternatives)
- [Foxentry alternatives](https://datacircle.dev/foxentry-alternatives)
- [HLR Lookups alternatives](https://datacircle.dev/hlr-lookups-alternatives)
- [Trestle alternatives](https://datacircle.dev/trestle-alternatives)
- [Addressfinder alternatives](https://datacircle.dev/addressfinder-alternatives)
- [CallerAPI alternatives](https://datacircle.dev/callerapi-alternatives)