# Foxentry, free trial, POST /phone/validate, Validate phone number (basic): Phone validation API

> This type of validation is primarily used to check if the phone number has correct format and syntax.

Foxentry's phone validation API on its Free trial plan. It costs $0.00 per 1,000 phones. It returns 5 of the 9 key fields we check: Number, Formats, Validity, Carrier, Place.
Foxentry limits how many calls you get but gives no number.
We rank 721 plans by price. [Botoi's $199 monthly plan](https://datacircle.dev/validate-phone-apis/botoi/199-monthly/llms.txt) is the cheapest paid plan per 1,000 phones: as little as $0.0066. Botoi's $199 monthly plan covers up to 1,000,000 phones a day.
[Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone/llms.txt), [Foxentry](https://datacircle.dev/validate-phone-apis/foxentry/top-up-pay-as-you-go-post-phone-validate-validate-phone-number-extended/llms.txt) and [Abstract API](https://datacircle.dev/validate-phone-apis/abstract-api/19-monthly-starter-5000-requests-month/llms.txt) are the best phone validation API providers in our benchmark.

- This page: https://datacircle.dev/validate-phone-apis/foxentry/free-trial-post-phone-validate-validate-phone-number-basic
- [Best phone validation API in 2026: providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://foxentry.com/rest-api-price-list?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Request: `POST https://api.foxentry.com/phone/validate`, Validate phone number (basic)
- API key: with the plan, on https://foxentry.com/rest-api-price-list?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Its API docs: https://foxentry.dev/reference/phonevalidation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- Sold by: Foxentry (https://foxentry.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 56%
- Number: ✓
- Formats: ✓
- Validity: ✓
- Carrier: ✓
- Place: ✓

## Price

- $ per 1,000 phones: $0.00
- Per: call
- Billing: free

## Aggregators

- Aggregators: none

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: This type of validation is primarily used to check if the phone number has correct format and syntax.

## Data

- Freshness: stored
- Countries: Worldwide
- What it checks: numbering plan
- Keep data: no limit
- Use data: You shall be responsible for your conduct related to the Script or the Service and their use always in accordance with these Terms and Conditions and with valid legislation. Your activity shall not be contrary to principles of ethics or public order and may not restrict the exercise of rights of a third person. You shall not make the Script or the Service available to any unauthorized third person. You shall not be entitled to sell, license, rent, assign or make available the Script or the Service to any third persons without our previous written consent. [...] When using the Script or the Service, You shall not use mechanisms, software, scripts or other procedures which could adversely affect their operation, i.e. in particular disrupt the functionality of the Script or the Service or overload them, and shall not perform any activity which could allow unauthorised interference with or unauthorised use of the software or other components constituting the Script or the Service and use the Script or the Service or any part of them or the software in a manner that would be contrary to their designation or purpose. [...] You may not modify, copy, reproduce, distribute or use the content for any purpose without our previous written consent.

## Plan

- Pay: $0
- Expires: 14 days

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: one of request.query.numberFull or request.query.prefix with request.query.number, request.options.validationType "basic". Optional: request.customId, request.options.allowedPrefixes, request.options.preferredPrefixes, request.options.numberFormat, request.options.correctionMode, request.client.ip, request.client.country, request.client.location.lat, request.client.location.lon, foxentry-include-request-details header
- Method: POST
- Path: /phone/validate

## About the plan

- Plan: Free trial
- Who can get it: anyone who signs up and creates an API project

## The 26 fields the plan's answer can hold

status, is valid, proposal, country code, country prefix, prefix, number, full number, carrier type, raw format, national format, E.164 format, E.123 format, error group, error type, error subtype, error severity, error related inputs, error description, corrected result, fix group, fix type, fix subtype, fix original value, fix corrected value, suggestions

## Foxentry's plans (5)

- [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/llms.txt): $0.00 per 1,000, 56% complete, stored
- [Foxentry, top-up, Pay as you go, POST /phone/validate, Validate phone number (basic)](https://datacircle.dev/validate-phone-apis/foxentry/top-up-pay-as-you-go-post-phone-validate-validate-phone-number-basic/llms.txt): $8.00 per 1,000, 56% complete, stored
- [Foxentry, contact us, Above 100 000 req / month, POST /phone/validate, Validate phone number (basic)](https://datacircle.dev/validate-phone-apis/foxentry/contact-us-above-100-000-req-month-post-phone-validate-validate-phone-number-basic/llms.txt): 56% complete, stored
- [Foxentry, contact us, Annual fix, POST /phone/validate, Validate phone number (basic)](https://datacircle.dev/validate-phone-apis/foxentry/contact-us-annual-fix-post-phone-validate-validate-phone-number-basic/llms.txt): 56% complete, stored
- [Foxentry, contact us, Enterprise, POST /phone/validate, Validate phone number (basic)](https://datacircle.dev/validate-phone-apis/foxentry/contact-us-enterprise-post-phone-validate-validate-phone-number-basic/llms.txt): 56% complete, stored

## Foxentry's calls for this API (2)

- `POST /phone/validate`, Validate phone number (basic): [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/llms.txt)
- `POST /phone/validate`, Validate phone number (extended): [Foxentry, free trial, POST /phone/validate, Validate phone number (extended)](https://datacircle.dev/validate-phone-apis/foxentry/free-trial-post-phone-validate-validate-phone-number-extended/llms.txt)

## Foxentry's APIs (2)

- [Foxentry: email verification API pricing, 5 plans, POST /email/validate, Validate email (basic)](https://datacircle.dev/validate-email-apis/foxentry/free-trial-post-email-validate-validate-email-basic/llms.txt)
- [Foxentry: email verification API pricing, 5 plans, POST /email/validate, Validate email (extended)](https://datacircle.dev/validate-email-apis/foxentry/free-trial-post-email-validate-validate-email-extended/llms.txt)
- [Foxentry: phone validation API pricing, 5 plans, POST /phone/validate, Validate phone number (basic)](https://datacircle.dev/validate-phone-apis/foxentry/free-trial-post-phone-validate-validate-phone-number-basic/llms.txt)

## Foxentry: phone validation API alternatives

- [ClearoutPhone, $35 pack, One Time 5,000 credits, POST /v1/phonenumber/validate, Instant Phone Number Validation](https://datacircle.dev/validate-phone-apis/clearoutphone/35-pack-one-time-5000-credits-post-v1-phonenumber-validate/llms.txt): $7.00 per 1,000, 56% complete, stored
- [ProWebLook, $3.99 monthly](https://datacircle.dev/validate-phone-apis/proweblook/3-99-monthly/llms.txt): $7.98 per 1,000, 67% complete, stored
- [Xverify, $40 pack](https://datacircle.dev/validate-phone-apis/xverify/40-pack/llms.txt): $8.00 per 1,000, 44% complete, stored
- [Tomba, $1,620 monthly](https://datacircle.dev/validate-phone-apis/tomba/1620-monthly/llms.txt): $8.10 per 1,000, 11% complete, stored

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-02.

- https://foxentry.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://foxentry.com/help-center/our-data-code?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://foxentry.com/help-center/try-foxentry-for-free?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://foxentry.com/rest-api-price-list?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://foxentry.com/terms-and-conditions?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://foxentry.dev/docs/validate-a-phone-number.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://foxentry.dev/page/faq.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://foxentry.dev/reference/phone-basic-vs-extended-validation.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://foxentry.dev/reference/phonevalidation.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing
- https://foxentry.dev/reference/testing-enviroment-sandbox.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing