Check which numbers are on WhatsApp — in bulk
Clean your contact lists before a campaign. Paste hundreds of numbers and PowerAPI Whatsapp tells you which ones have WhatsApp, so you don't waste messages or risk your number on invalid contacts.
Why teams choose PowerAPI for WhatsApp Number Checker
Bulk verification
Check up to 200 numbers per run, as many runs as you like.
Export results
Download a CSV of valid and invalid numbers or copy only the valid ones.
Also via API
Call /check-number from your own signup forms to validate phone numbers in real time.
Any country
Works with numbers from every country; 10-digit numbers get your default country code.
How it works
-
01
Connect a number
The check runs through your own linked WhatsApp number.
-
02
Paste your list
One number per line or comma separated.
-
03
Export
Download results or save valid numbers to a contact list.
Related features
Send personalised bulk WhatsApp messages from a CSV. Use {{name}} placeholders, attach images, schedule campaigns and send with safe random delays.
WhatsApp Group ExtractorExport the member list of WhatsApp groups you belong to. See admins, download a CSV or save members straight to a contact list.
WhatsApp APISend WhatsApp text, media, locations and polls with a simple REST API. Connect a number by QR code in seconds, get webhooks and start free.
Popular use cases
Questions about WhatsApp Number Checker
Does checking a number send them a message?
No. The check is silent — the other person is not notified.
Why validate numbers before sending?
Messaging numbers that aren't on WhatsApp wastes quota, and cleaner lists mean better delivery and fewer issues for your number.
Start automating WhatsApp today
Create a free account, connect your number in a minute and send your first message.