# Fonnte, free: WhatsApp number check API

> Check if a number is registered on whatsapp.

Fonnte's Free plan for the WhatsApp number check API costs $0.00 per 1,000 phones. We check each provider's docs for 6 fields. Fonnte's docs list 1: On WhatsApp.
We haven't run a WhatsApp number check API benchmark yet.
This plan is free. We rank 99 plans for WhatsApp number check APIs by price. Half the plans cost $3.20 or less per 1,000 phones.
[ZelNum's $500 pack](https://datacircle.dev/check-whatsapp-apis/zelnum/500-pack-pay-as-you-go-500-top-up-post-detect/llms.txt) costs the least per 1,000 phones: $0.043. [Wawp's €39 yearly plan](https://datacircle.dev/check-whatsapp-apis/wawp/39-yearly/llms.txt) costs the least for 10,000 phones a month: about $3.66.

- This page: https://datacircle.dev/check-whatsapp-apis/fonnte/free
- Get it: https://fonnte.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- Request: `POST https://api.fonnte.com/validate`
- API key: with the plan, on https://fonnte.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- Its API docs: https://docs.fonnte.com/api-validate-number/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- Sold by: Fonnte (https://fonnte.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 17%
- On WhatsApp: ✓

## Price

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

## Charges

- Also pays for: Sending API Messages

## Not found

- $ per 1,000 calls that find nothing: $0.00

## In their words

- Their pitch: Check if a number is registered on whatsapp.

## Data

- Freshness: live
- What it checks: messaging apps
- Keep data: no limit
- Use data: any

## Plan

- Pay: $0
- You get: 1,000 requests a month

## Rate limit

- Batch: 500

## Speed

- Answer: in the call

## The call

- You send: target. Optional: countryCode
- Method: POST
- Path: /validate

## About the plan

- Plan: Free
- Who can get it: anyone with a WhatsApp number, regular or Business, to connect to a device

## The 3 fields the plan's answer can hold

registered numbers, not registered numbers, request status

## Fonnte's plans (8)

- [Fonnte, free](https://datacircle.dev/check-whatsapp-apis/fonnte/free/llms.txt): $0.00 per 1,000, 17% complete, live
- [Fonnte, $2.50 monthly](https://datacircle.dev/check-whatsapp-apis/fonnte/2-50-monthly/llms.txt): 17% complete, live
- [Fonnte, $6 monthly](https://datacircle.dev/check-whatsapp-apis/fonnte/6-monthly/llms.txt): 17% complete, live
- [Fonnte, $10 monthly](https://datacircle.dev/check-whatsapp-apis/fonnte/10-monthly/llms.txt): 17% complete, live
- [Fonnte, $13 monthly](https://datacircle.dev/check-whatsapp-apis/fonnte/13-monthly/llms.txt): 17% complete, live
- [Fonnte, $14 monthly](https://datacircle.dev/check-whatsapp-apis/fonnte/14-monthly/llms.txt): 17% complete, live
- [Fonnte, $22 monthly](https://datacircle.dev/check-whatsapp-apis/fonnte/22-monthly/llms.txt): 17% complete, live
- [Fonnte, $29 monthly](https://datacircle.dev/check-whatsapp-apis/fonnte/29-monthly/llms.txt): 17% complete, live

## Fonnte's calls (1)

- `POST /validate`: [Fonnte, free](https://datacircle.dev/check-whatsapp-apis/fonnte/free/llms.txt)

## Fonnte's APIs (1)

- [Fonnte WhatsApp number check API pricing, 8 plans](https://datacircle.dev/check-whatsapp-apis/fonnte/free/llms.txt)

## Fonnte: WhatsApp number check API alternatives

[Fonnte alternatives: other WhatsApp number check API providers by price](https://datacircle.dev/fonnte-alternatives.txt)

We list other providers' plans closest to this plan in price per 1,000 phones. Each plan in the list gives live data.

- [ProWebLook, free signup credits, POST /wavalidation/batch](https://datacircle.dev/check-whatsapp-apis/proweblook/free-signup-credits-post-wavalidation-batch/llms.txt): $0.00 per 1,000, 67% complete, live
- [Listar, free](https://datacircle.dev/check-whatsapp-apis/listar/free/llms.txt): $0.00 per 1,000, 50% complete, live
- [Maytapi, free](https://datacircle.dev/check-whatsapp-apis/maytapi/free/llms.txt): $0.00 per 1,000, 33% complete, live
- [Nock, free](https://datacircle.dev/check-whatsapp-apis/nock/free/llms.txt): $0.00 per 1,000, 17% complete, live

## 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://docs.fonnte.com/about-package?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://docs.fonnte.com/api-send-message?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://docs.fonnte.com/api-validate-number/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://fonnte.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://fonnte.com/tutorial/terms-conditions?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing