--- title: Phone Number Masking with Telnyx canonical: https://telnyx.com/use-cases/phone-number-masking --- # Phone Number Masking with Telnyx **Use Case** # Phone number masking **About** ## Protect customer & agent privacy with anonymous calling Phone numbers are tightly tied to a person’s online identity and safety. The onus is on businesses to safeguard the privacy of their customers and workers. Use call masking to mask phone numbers and anonymize voice calls or texts, enabling user-to-user communication without revealing personal phone numbers. ## Benefits ## Set up in minutes Simple XML-based scripting allows for bridging two or more calls with intuitive syntax. Or, use our powerful REST API for real-time responsive call flows. 5 ## Minutes to build an XML-based voice app with TeXML ## Get expert service & support Our award-winning support teams have direct troubleshooting access to our private network infrastructure and in-depth knowledge of our APIs for faster resolutions. #1 ## Rated CPaaS platform for customer results, G2 Winter 2023 **How It Works** 1. **1** ### A caller places a phone call to a recipient Whether it's a customer, a third party or your organization's representative, calls can be initiated via standard dialing or via [web or mobile app](https://telnyx.com/products/webrtc). 2. **2** ### Anonymous phone calls are initiated in your Telnyx application When the caller initially places the call from their device, they are automatically connected on their end of the call. 3. **3** ### Recipient receives a call from a masked or customizable number The recipient receives a phone call from the Telnyx core network, from a display number that's fully customizable within your Telnyx application. 4. **4** ### Both ends of the call are bridged without numbers being revealed When the recipient answers, Telnyx bridges the recipient's active call and the caller's active call together, allowing both parties to communicate with carrier-grade phone call audio, and without exposing either phone number to the other party. Products ## A suite of telephony tools to protect caller privacy [See all products](https://telnyx.com/products) * [![Inference API graphic](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/Inference-011fcc8b.png?width=1696&format=webp)Global NumbersInstantly search, provision and port local, mobile and toll-free numbers in 140+ countries.LEARN MORE](https://telnyx.com/products/phone-numbers) * [![Telnyx Cloud Storage Product Animation](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/Product_Thumbnail_Storage_Storage-bdc04c52.png?width=640&format=webp)Voice APIDesign the exact voice call flow you need with full control using our flexible and scalable API. LEARN MORE](https://telnyx.com/products/voice-api) * [![Flow graphic](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/Product_Detail_Hero_Flow--2--40c649d9.png?width=1696&format=webp)SIP Trunking Configure, deploy and scale voice calling across the globe, all through an intuitive portal and API. LEARN MORE](https://telnyx.com/products/sip-trunks) * [![Woman sends text message](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/Product_Thumbnail_Comms_SMS-API-0905ed67.png?width=640&format=webp)SMS APIMask personal phone numbers using the SMS API for secure texting. LEARN MORE](https://telnyx.com/products/sms-api) **Resources** * ### Build masked-number calling with Telnyx and Java Using our brand-new Java SDK and the Telnyx Voice API, we build an advanced masked-number calling application. [Watch webinar](https://telnyx.com/resources/voice-api-java-recap) * ### Make a call to an iOS mobile app Set up and use the Telnyx RTC Native SDKs in your iOS app to receive calls with push notifications. [Explore docs](https://developers.telnyx.com/docs/voice/webrtc/make-a-call-to-a-mobile-app) * ### Build a voice app with TeXML in 5 minutes Learn how to write a simple voice calling app using straightforward XML scripting and low-code deployment in the Telnyx portal. [Watch tutorial](https://telnyx.com/resources/texml-bin-release) ## Ready to build something incredible? [Sign up](https://telnyx.com/sign-up) ## FAQ ### What is phone number masking? Phone number masking (also known as call masking) is a privacy solution used by businesses to safeguard their customers’ identity and privacy. Number masking also allows companies to choose different virtual phone numbers to display on the recipient’s device. ### How does call masking work? ### What are the benefits of number masking? [Start building](https://telnyx.com/sign-up) ### Ask AI * [![GPT](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/chatgpt_icon-ea55e09d.jpeg?width=92&format=webp)](https://chat.openai.com/?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.) * [![Claude](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/claude_icon-c7c8eef3.webp?width=92&format=webp)](https://claude.ai/new?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.) * [![Perplexity](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/perplexity_icon-cd5b74f1.webp?width=92&format=webp)](https://www.perplexity.ai/search?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.) * [![Gemini](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/gemini_icon-4ff1cbf4.webp?width=92&format=webp)](https://www.google.com/search?udm=50&aep=11&q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.) * [![Grok](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/grok_icon-e588e5bd.webp?width=92&format=webp)](https://x.com/i/grok?text=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.)