Call is initiated in app
A call is made from Telnyx to the end user’s device phone number. Learn more
Places a call to the customer with "from number" set as a virtual or anonymous number. Learn more
The calls are bridged together, allowing the customer and agent to communicate while maintaining privacy. Learn more
- Explore Numbers
NumbersInstantly search, provision and port local, mobile, national, and toll-free numbers.
- Explore Voice API
Programmable voiceDesign the exact voice call flow and experience you want with full control using our flexible and scalable API.
- Explore SMS API
MessagingMask personal phone numbers using the SMS API for secure texting.
- Explore WebRTC
In-app voice and video callingBuild a seamless, customizable in-app voice or video experience into your mobile or web applications.
Initiate a call from within any app or browser with just one click.
Explore use case
Watch: Masked-number calling with the Telnyx Voice API and Java SDK
Learn how to build a simple masked-number calling app.
Build real-time communications into your app with ease using our SDKs.
Frequently Asked Questions about Phone Number Masking
Phone number masking (also known as call masking) is a privacy solution that is used by businesses to safeguard their customers’ identity and privacy. Call masking works by anonymizing the participating phone numbers by connecting the call through a temporary proxy phone number, and is a solution often used by e-commerce, ride sharing, and food delivery companies. By utilizing Voice APIs and a pool of temporary virtual numbers to connect the customers and the agents, customers and gents can communicate without revealing their personal phone numbers to each other. The number masking feature also allows companies to choose the different, virtual phone number that is displayed on the recipient’s device.
Number masking helps to protect private information.
- Phone number masking increases security for businesses and customers by anonymizing the numbers used during calls. Masking real numbers with a virtual one protects user privacy and revenue by keeping all calls on your platform.
- Protect your phone number. Keep your business phone calls separate from your mobile phone number.