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WhatsApp Number Validator — WhatsApp | Lagic

Built ForE-commerceReal EstateRecruitment

Verify which phone numbers have active WhatsApp accounts before you send a message.

Curated by Lagic·Verified working

Configure Agent

The phone number to check (e.g., 5511999999999)

Results to deliver

300 credits

This agent actively searches live listings — results may vary. You are only charged for what is delivered, up to this number.

Lagic Proxy

Country auto-rotated. Need a specific region? Contact support.

Pricing

3 credits per result
✓ 30 free credits on signup✓ Refund if 0 results✓ No card required

Sample Data Preview

A true/false confirmation if the number has an active WhatsApp account.A true/false check on whether the number follows a valid format.The original phone number you submitted for verification.A summary status of the check (e.g., "exists", "does-not-exist").The timestamp of when the verification was performed.
7010094746Value...2026-04-05
9710094914Value...2026-04-05
...............
Exports as:CSVXLSXJSON

Overview

Check if a phone number is registered on WhatsApp. Provide a single phone number to see if an account exists, helping you clean marketing lists and verify contact data before outreach.

Sending marketing or support messages to phone numbers that don't have a WhatsApp account is a waste of resources and can harm your business account's reputation. This tool solves that problem by checking a single phone number to confirm if it has an active WhatsApp account. ### Who is this for? This validator is built for sales teams, marketing agencies, customer support departments, and any business that uses WhatsApp for communication. It helps you maintain clean contact lists, improve message deliverability, and avoid sending messages to dead numbers. ### How it helps your business By verifying numbers beforehand, you ensure your outreach efforts are focused on actual users. This not only improves campaign performance metrics but also protects your WhatsApp Business account from being flagged for sending messages to a high volume of non-existent contacts. The output tells you two key things: whether the number format is valid (`isValid`) and, more importantly, whether an account actually exists on WhatsApp (`exists`).

Key Capabilities

  • A true/false confirmation if the number has an active WhatsApp account.
  • A true/false check on whether the number follows a valid format.
  • The original phone number you submitted for verification.
  • A summary status of the check (e.g., "exists", "does-not-exist").
  • The timestamp of when the verification was performed.
  • Clean a lead list before launching a WhatsApp marketing campaign.
  • Verify customer support numbers before adding them to a broadcast list for service updates.
  • Allow sales reps to check if a prospect is on WhatsApp before initiating contact.
  • Validate user-provided phone numbers from a registration form.
  • Reduce costs on paid WhatsApp messaging APIs by filtering out invalid numbers.
  • Confirm a new business contact's presence on WhatsApp for follow-ups.
  • Perform a quick check on a single number for customer service identity verification.

Field Dictionary

How To Run This Extractor

1

Provide the phone number you want to verify, including its country code (e.g., 5511999999999).

2

Run the tool.

3

The tool queries WhatsApp to determine if an account is registered to that number.

4

Review the output data to see if the number is valid and if it exists on WhatsApp.

5

Download the results in your preferred format.

Frequently Asked Questions

Do I need technical skills to use this tool?
No, you only need to provide a phone number in the input field and run the tool.
What format should the phone number be in?
What's the difference between 'exists' and 'isValid' in the output?
Can I check a list of numbers in bulk?
Is it legal to check if a number has WhatsApp?
How fresh is the data?
Can I use this for my clients if I run an agency?
In what formats can I get the results?
Can I schedule this tool to run automatically?
How is cost determined?