WhatsApp number availability check

Check if a number is on WhatsApp

The free Check WhatsApp numbers Tool
Different use cases — one WhatsApp checker

Choose the right way to check WhatsApp numbers

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One-time check

Need to check one number quickly?
Use the tool below for instant verification.

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Bulk validation

Have a list of numbers?
Order a bulk check from our team or use API access for automated validation.

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Automation & systems

Building automation or CRM workflows?
Use the full WhatsApp API for number checking, messaging and integrations.

Check if a number is on WhatsApp
WhatsApp number validation without development

No-code WhatsApp number checking

How to bulk verify whether phone numbers are registered on WhatsApp? Whapi.Cloud provides a no-code WhatsApp number checker designed for bulk validation without development.
Easily upload or process large lists of phone numbers, filter out invalid or inactive ones, and work only with real WhatsApp users — quickly and accurately.

  • Flexible usage: API access or done-for-you bulk checks
  • No technical limits on check speed and volume
  • Easy to use, even without technical background
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demo

Bulk check via API? Sure!

If you are a developer, you might find our open source project for software number check useful! This tool was created using our public API. You can find out the status of a phone number or an array of numbers through our HTTP API.
Additional features: online status, last seen and more
Suitable for CRM systems, data pipelines and integrations
Stable API designed for batch and automated number checks
Check any numbers imported from a CSV file and save with any filters
How it works under the hood

How WhatsApp number checking works

WhatsApp number checking verifies whether a phone number is registered on WhatsApp.
From a user perspective, this is similar to starting a chat with a phone number in WhatsApp — if the number is not registered, WhatsApp clearly indicates it.
Whapi.Cloud performs this check programmatically through an API channel using a connected WhatsApp number and real-time socket communication, without relying on the WhatsApp user interface.
If you prefer not to use your own number, you can order a done-for-you bulk check handled by our team.

Get API access Order a check with us
How it works under the hood
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The best Number Checker for WhatsApp
100% accurate and High-Speed Validator

Limited free WhatsApp number checking

You can test WhatsApp number checking using our Sandbox plan with limited daily quotas (up to 30 numbers per day). This option is intended for testing, small checks and evaluation.
If you need to validate larger lists, you can either upgrade to API access or use our done-for-you bulk checking service — where we process your entire list and deliver clean results for you.

  • Clear your database of unnecessary numbers
  • Optimize your resources and save time and money
  • Integrate into your application or program
Let's Chat About Bulk Check
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WhatsApp Bot Usage
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See What Our Clients Built
with Whapi.Cloud

“Managing multiple WhatsApp groups is simple with Whapi.Cloud. I can oversee group activity, manage admins, and post updates effortlessly. It’s a perfect way to generate leads directly from WhatsApp groups.”

Group Management and Lead Generation from WhatsApp Groups

Carlos da Silva
“Our hotel uses WhatsApp to send guests essential check-in details like door codes. This ensures they always have the info they need. We can even process photos guests send, such as proof of checkout.”

Smart Hotel Communication for Check-In and Guest Support

Ana-Maria Ionescu
“We manage a WhatsApp Channel and use Whapi.Cloud to monitor similar channels and competitors, scraping the best deals and posting them for our audience.”

Automated Discount Channel Management

Katrin Schneider
“We use Whapi.Cloud to verify which numbers in our database are on WhatsApp by sending cascading broadcasts. This way, we filter our contacts, reduce marketing costs, and know our messages reach active users-maximizing campaign efficiency.”

WhatsApp Number Verification and Audience Filtering

Sergio Navarro
“Our hospital’s bot, powered by Whapi.Cloud, lets patients see available appointment slots for specific doctors and notifies them when test results are ready. It keeps everyone informed and reduces the time our team spends on manual updates.”

Hospital Bot for Appointment Scheduling and Notifications

Fernanda Oliveira
“We use personalized promotional offers to engage customers weeks after their purchase, sending out exclusive discount vouchers via WhatsApp. We also send a special offer for each customer’s birthday, which boosts loyalty and keeps them coming back.”

Customer Loyalty and Retention

Lukas Wagner
“As soon as an order ships, our customers get tracking details and delivery updates directly on WhatsApp. This real-time communication builds trust and reduces the number of inquiries we receive after purchase.”

Order Tracking and Delivery Updates

Matei Popescu
“If a customer leaves items in their cart on our site, WhatsApp Bot automatically sends a friendly reminder. This gentle nudge has significantly increased our checkout rate, helping us convert more sales.”

Abandoned Cart Reminders

Hans Müller
Automate <span>WhatsApp</span> number checks with Make and n8n
No-code automation

Automate WhatsApp number checks with Make and n8n

Connect WhatsApp number checking to Make or n8n and automate validation flows without backend development. Perfect for marketers, analysts and teams working with large datasets.

Pay for access Learn more about now-code
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AI agents & automation

Use WhatsApp number checks inside AI agents via MCP

Whapi.Cloud supports MCP integrations, allowing AI agents to check WhatsApp numbers and trigger actions automatically. This is ideal for AI-driven workflows, research agents and intelligent automation without manual intervention.

Pay for access Learn about MCP
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