WhatsApp Phone Check API API ID: 9950

The WhatsApp Phone Check API validates phone numbers, indicating whether they are registered with WhatsApp and whether they correspond to a Business account.
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The WhatsApp Phone Check 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 Phone Check 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 Phone Check 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.

API Documentation

Endpoints


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



                                                                            
GET https://docs.zylalabs.com/api/9950/whatsapp+phone+check+api/22710/number+checker
                                                                            
                                                                        

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

{"id":18344,"status":true,"numberstatus":false,"businessnumber":false}

Number Checker - CODE SNIPPETS


curl --location --request GET 'https://zylalabs.com/api/9950/whatsapp+phone+check+api/22710/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 Phone Check 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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WhatsApp Phone Check 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 a 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 communication strategies.

Each endpoint accepts a phone number as a parameter, typically formatted in international style (e.g., +1234567890). This ensures accurate validation and consistency in responses.

The data is sourced directly from WhatsApp's infrastructure, ensuring high accuracy and reliability. Regular updates and checks are performed to maintain data integrity and reflect current account statuses.

Common use cases include validating customer contact information before messaging campaigns, ensuring effective outreach to Business accounts, and maintaining clean databases by filtering out unregistered numbers.

If a response indicates that a number is not registered or is empty, users should consider alternative communication methods or verify the number's accuracy. Implementing fallback strategies can enhance user engagement.

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