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WhatsApp Number Validator - Bulk Check 10K per Run — WhatsApp | Lagic

Built For

Validate thousands of phone numbers to see which have active WhatsApp accounts.

Curated by Lagic·Verified working

Configure Agent

List of phone numbers with country code (e.g., +1234567890)

Upload a CSV or Excel (.xlsx) file with phone numbers

Country code to prepend to numbers without a + prefix (e.g., '91' for India, '1' for US)

Only output phone numbers that have WhatsApp (skip numbers without WhatsApp)

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 'Yes/No' status indicating if the number has an active WhatsApp account.A 'Yes/No' status on whether the original number format was valid.The timestamp of when the check was performed.The country code identified and used for the check.The original phone number you provided for reference.The cleaned, standardized phone number used for the validation check.
740100912026-04-05100951009610091
539100942026-04-05100981009110094
..................
Exports as:CSVXLSXJSON

Overview

Check up to 10,000 phone numbers per run to verify which contacts are on WhatsApp. Upload a CSV or paste a list to clean your marketing and sales data before your next campaign.

Stop sending messages to inactive or invalid numbers. This tool checks phone numbers in bulk against WhatsApp's database to tell you which ones have an active account. It's built for cleaning contact lists, validating new leads, and ensuring your outreach budget is spent on real, reachable people. ### How it works You can provide numbers in a few ways: paste a list directly, upload a CSV or Excel file, or a combination of both. If your data is messy and lacks country codes, you can set a default code (e.g., '1' for the US) to apply to any number without a '+' prefix. The tool then checks each number and reports back on its status. ### Who is this for? This is for any team that uses WhatsApp for communication. Marketing and sales teams can scrub their CRM data before a campaign to improve delivery rates. Lead generation agencies can validate contact lists before selling them to clients. Community managers and support teams can verify user-provided numbers to streamline communication.

Key Capabilities

  • ✓ A 'Yes/No' status indicating if the number has an active WhatsApp account.
  • ✓ A 'Yes/No' status on whether the original number format was valid.
  • ✓ The timestamp of when the check was performed.
  • ✓ The country code identified and used for the check.
  • ✓ The original phone number you provided for reference.
  • ✓ The cleaned, standardized phone number used for the validation check.
  • ✓ Clean a CRM contact list before launching a WhatsApp marketing campaign.
  • ✓ Verify user-provided phone numbers during a new customer signup process.
  • ✓ Segment a customer database for targeted WhatsApp vs. SMS outreach.
  • ✓ Perform a data hygiene audit on an existing customer or lead database.
  • ✓ Validate a list of leads from a trade show before adding them to a sales sequence.
  • ✓ Prepare a contact list for business development outreach in a new international market.
  • ✓ Filter a large export of phone numbers to identify only active WhatsApp users for a survey.

Field Dictionary

How To Run This Extractor

1

Provide phone numbers by pasting them into the 'Phone Numbers' field or by uploading a CSV/Excel file.

2

If your numbers lack a '+' prefix, enter a default code like '1' for the US in the 'Default Country Code' field.

3

Choose whether you want a report on all numbers or only the ones that have a WhatsApp account.

4

Run the tool to start the validation process.

5

Download the results as a single file containing the status of each number.

Frequently Asked Questions

Do I need technical skills to use this tool?
No. You can paste a list of numbers or upload a CSV/Excel file without any coding.
What format can I get the data in?
Is it legal to check phone numbers?
How many numbers can I check at once?
Can I use this for my agency's clients?
What happens if my numbers don't have a country code?
Can I get a list of ONLY the numbers that have WhatsApp?
How fresh is the data?
Can I schedule this to run automatically?
How is the cost determined?