WhatsApp Number Data API

API ID 9956

Capture and verify WhatsApp numbers quickly, ensuring reliable outreach for your business communications.

100% uptime 1,388 ms avg response

API Documentation

Endpoints

Request

Insert the phone number with the country code but without the + sign. The endpoint will let you know if the number is on WhatsApp or not. 

Example format: 14083742784

Endpoint ID: 22712
GET https://docs.zylalabs.com/api/9956/whatsapp+number+data+api/22712/number+checker
INPUT PARAMETERS

Number Checker — Endpoint Features

Object Description
number Required Insert the phone number with the country code but without the + sign. Example format: 14083742784

Free test requests remaining: 3 of 3.


INPUT PARAMETERS

number
API EXAMPLE RESPONSE
JSON
{"id":18344,"status":true,"numberstatus":false,"businessnumber":false}
Number Checker — CODE SNIPPETS

curl --location --request GET 'https://zylalabs.com/api/9956/whatsapp+number+data+api/22712/number+checker?number=14083742786' --header 'Authorization: Bearer YOUR_API_KEY' 


    

API Access Key & Authentication

After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the WhatsApp Number Data API simply include your bearer token in the Authorization header.

Headers
Header Description
Authorization Required Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.

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Overview

The WhatsApp Number Data API is a tool designed for users who need to quickly and reliably validate phone numbers on WhatsApp. Its main function is to receive a number as a parameter and return two key pieces of information: first, whether the number is registered on WhatsApp (true or false).

This service is especially useful in scenarios where communication via WhatsApp is a fundamental channel for interacting with customers, prospects, or end users. With prior validation, organizations can optimize their messaging campaigns, avoiding errors, reducing costs, and ensuring that messages are sent only to contacts who actually use the platform.

In addition, the WhatsApp Number Data API helps keep databases cleaner and more up-to-date, minimizing the presence of invalid or irrelevant numbers within contact records. This not only increases efficiency but also improves brand reputation by avoiding failed or unnecessary communication attempts.

In short, the WhatsApp Number Data API is a reliable, scalable, and easy-to-implement solution, ideal for any company looking to take full advantage of the communication opportunities offered by WhatsApp.

WhatsApp Number Data API FAQs

The "Check Number" endpoint returns a boolean indicating if the number is registered on WhatsApp, while the "Business Number Checker" endpoint indicates if the number is associated with a Business account. Both endpoints provide essential validation for effective communication.

The response data typically includes fields such as "is_registered" (true/false) for the "Check Number" endpoint and "is_business" (true/false) for the "Business Number Checker" endpoint, allowing users to quickly assess account status.

The response data is structured in JSON format, with clear key-value pairs. For example, a response might look like: {"is_registered": true, "is_business": false}, making it easy to parse and utilize in applications.

The "Check Number" endpoint provides information on whether a number is registered on WhatsApp, while the "Business Number Checker" endpoint reveals if the number is linked to a Business account, aiding in targeted outreach.

Each endpoint accepts a phone number as a parameter, formatted according to international standards (e.g., +1234567890). Ensure the number is valid to receive accurate responses.

Data accuracy is maintained through regular updates and validation checks against WhatsApp's database. This ensures that the information returned reflects the current status of the phone numbers.

Typical use cases include validating customer contact information before messaging campaigns, ensuring outreach efforts target active WhatsApp users, and maintaining clean databases by identifying invalid numbers.

If a response indicates that a number is not registered or is empty, consider implementing fallback communication methods. This ensures that outreach efforts remain effective even when WhatsApp is not an option.

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