Stop wasting your budget on invalid numbers.
Instantly clean your contact lists. Our service provides high-accuracy bulk number validation for WhatsApp, Telegram, Instagram and more. Maximize your marketing ROI and ensure every message counts through our powerful batch checker and real-time API.
200+
Countries Covered
1M+ Numbers
per single batch file
Up to 99.9%
Validation Accuracy
Telegram
Amazon
Apple
Active Detection
One Platform, Multiple Verifications
We support a growing list of major platforms to ensure your contact data is always clean and up-to-date. From messaging apps to social media, we've got you covered.
Flexible, Secure, and Easy to Use
Use Our Dashboard
For Marketers - Bulk Check
- Upload your CSV file.
- Start validation.
- Download the clean list.
Integrate Our API
For Developers - Real-time API
Check numbers on the fly. Integrate with a few lines of code for real-time validation in your app or workflow.
What Our Customers Are Saying
"NumberChecker.AI has been a complete game-changer for our marketing outreach. We've significantly cut down on wasted spend by cleaning our lists beforehand. The accuracy is top-notch and saved us a huge amount on our last campaign."
Alex Johnson
Marketing Lead
"As a developer, I was impressed with the API. It's robust, incredibly fast, and the documentation is crystal clear. It's now a core, reliable part of our user registration and data validation process."
Samantha Lee
Senior Developer
Frequently Asked Questions
Our validation process boasts up to 99.9% accuracy by using a combination of real-time checks and advanced algorithms, ensuring you get the most reliable data possible.
Absolutely. We prioritize your data's security and privacy. All data is encrypted in transit and at rest, and we never share or sell your contact lists. We are fully GDPR compliant.
We support number validation for over 200 countries and regions worldwide, covering all major international phone number formats.
No. Our checking process is designed to be non-intrusive and does not interact with platforms in a way that violates their terms of service. We do not require you to link your own account, which completely isolates you from any risk.
