About NumberChecker.AI
NumberChecker.AI is a bulk phone number checker and validation API. We help you verify whether phone numbers are registered on WhatsApp, Telegram, Instagram, Amazon, and more—so you can clean contact lists before campaigns and improve deliverability. No QR code or app login required.
What we do
We run the NumberChecker.AI service: bulk number validation for marketers, sales teams, and developers. You can upload CSV/TXT files on our dashboard for batch checks, or integrate our API for automated validation jobs. We support 200+ countries and return clear statuses (e.g. active, inactive, not registered, invalid).
How verification works
Verification runs on our infrastructure. You send us phone numbers through file upload, API request, or the limited free demo; we return the registration or validity status. We do not send messages, read chats, or access your WhatsApp/Telegram account.
Data and privacy
We use phone numbers only to perform verification and return results. We do not store or sell your contact lists for advertising. For full details, see our Privacy Policy and Terms of Service.
Contact us
For pricing, API integration, or support, contact us or use the WhatsApp/Telegram links in the footer.
