# WSAPI, free trial, GET /users/{phone}/check: WhatsApp number check API

> Check multiple phone numbers at once to see if they are registered on WhatsApp.

WSAPI's Free Trial plan for the WhatsApp number check API costs $0.00 per 1,000 phones. We check each provider's docs for 6 fields. WSAPI's docs list 1: On WhatsApp.
WSAPI limits how many calls you get but gives no number.
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/wsapi/free-trial-get-users-phone-check
- Get it: https://wsapi.chat/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- Request: `GET https://api.wsapi.chat/users/{phone}/check`
- API key: with the plan, on https://wsapi.chat/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- Its API docs: https://docs.wsapi.chat/api-reference/users/check-if-a-phone-number-is-on-whatsapp?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- Sold by: WSAPI (https://wsapi.chat?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing)
- Checked: 2026-11-09

## In the answer

- Completeness: 17%
- On WhatsApp: ✓

## Price

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

## Charges

- Also pays for: 136 other WSAPI calls

## Not found

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

## In their words

- Their pitch: Check multiple phone numbers at once to see if they are registered on WhatsApp.

## Data

- Freshness: live
- What it checks: messaging apps
- Keep data: no limit
- Use data: You agree not to use the Service to: Violate any applicable laws or regulations. Send unsolicited messages (spam), including bulk commercial messages. Harass, threaten, or abuse other individuals. Distribute malware, viruses, or other harmful software. Impersonate any person or entity, or falsely represent your affiliation with any person or entity. Interfere with or disrupt the integrity or performance of the Service. Attempt to gain unauthorized access to the Service or related systems. Violate WhatsApp's Terms of Service or any applicable third-party terms.

## Plan

- Pay: $0

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: X-Instance-Id header, phone
- Method: GET
- Path: /users/{phone}/check

## About the plan

- Plan: Free Trial
- Who can get it: new users

## The only field the plan's answer can hold

registered on WhatsApp

## WSAPI's plans (8)

- [WSAPI, free trial, GET /users/{phone}/check](https://datacircle.dev/check-whatsapp-apis/wsapi/free-trial-get-users-phone-check/llms.txt): $0.00 per 1,000, 17% complete, live
- [WSAPI, $5 monthly, Single Instance, GET /users/{phone}/check](https://datacircle.dev/check-whatsapp-apis/wsapi/5-monthly-single-instance-get-users-phone-check/llms.txt): 17% complete, live
- [WSAPI, $23.75 monthly, 5 Instances, GET /users/{phone}/check](https://datacircle.dev/check-whatsapp-apis/wsapi/23-75-monthly-5-instances-get-users-phone-check/llms.txt): 17% complete, live
- [WSAPI, $92 monthly, 20 Instances, GET /users/{phone}/check](https://datacircle.dev/check-whatsapp-apis/wsapi/92-monthly-20-instances-get-users-phone-check/llms.txt): 17% complete, live
- [WSAPI, $51 yearly, Single Instance, GET /users/{phone}/check](https://datacircle.dev/check-whatsapp-apis/wsapi/51-yearly-single-instance-get-users-phone-check/llms.txt): 17% complete, live
- [WSAPI, $243 yearly, 5 Instances, GET /users/{phone}/check](https://datacircle.dev/check-whatsapp-apis/wsapi/243-yearly-5-instances-get-users-phone-check/llms.txt): 17% complete, live
- [WSAPI, $948 yearly, 20 Instances, GET /users/{phone}/check](https://datacircle.dev/check-whatsapp-apis/wsapi/948-yearly-20-instances-get-users-phone-check/llms.txt): 17% complete, live
- [WSAPI, contact us, Resellers, GET /users/{phone}/check](https://datacircle.dev/check-whatsapp-apis/wsapi/contact-us-resellers-get-users-phone-check/llms.txt): 17% complete, live

## WSAPI's calls (2)

- `POST /users/check`: [WSAPI, free trial, POST /users/check](https://datacircle.dev/check-whatsapp-apis/wsapi/free-trial-post-users-check/llms.txt)
- `GET /users/{phone}/check`: [WSAPI, free trial, GET /users/{phone}/check](https://datacircle.dev/check-whatsapp-apis/wsapi/free-trial-get-users-phone-check/llms.txt)

## WSAPI's APIs (1)

- [WSAPI WhatsApp number check API pricing, 8 plans, GET /users/{phone}/check](https://datacircle.dev/check-whatsapp-apis/wsapi/free-trial-get-users-phone-check/llms.txt)

## WSAPI: WhatsApp number check API alternatives

[WSAPI alternatives: other WhatsApp number check API providers by price](https://datacircle.dev/wsapi-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.

- [2Chat, free trial, GET /open/whatsapp/check-number/{your-number}/{number-to-check}, Check Number](https://datacircle.dev/check-whatsapp-apis/2chat/free-trial-get-open-whatsapp-check-number-your-number-number-to-check-check-number/llms.txt): $0.00 per 1,000, 83% complete, live
- [Credify, free](https://datacircle.dev/check-whatsapp-apis/credify/free/llms.txt): $0.00 per 1,000, 17% complete, live
- [Fonnte, free](https://datacircle.dev/check-whatsapp-apis/fonnte/free/llms.txt): $0.00 per 1,000, 17% complete, live
- [CheckNumber.AI, free trial, POST /v1/tasks, WhatsApp Advanced](https://datacircle.dev/check-whatsapp-apis/checknumber-ai/free-trial-post-v1-tasks-whatsapp-advanced/llms.txt): $0.00 per 1,000, 0% 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 2026-11-09.

- https://docs.wsapi.chat/api-reference/overview?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://docs.wsapi.chat/api-reference/users/bulk-check-phone-numbers-on-whatsapp.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://docs.wsapi.chat/api-reference/users/check-if-a-phone-number-is-on-whatsapp.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://docs.wsapi.chat/basics/free-trial?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://docs.wsapi.chat/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://wsapi.chat/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://wsapi.chat/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing