### Answer I don't have specific information in the available sources about why you might be receiving calls from anonymous numbers through Retell AI. The available documentation covers topics like connecting phone numbers via SIP trunking [(1) ]() , importing phone numbers [(2) ]() , debugging outbound connection issues [(3) ]() , and phone number masking/caller ID configuration [(1) ]() , but doesn't specifically address anonymous inbound calls. To get help with this issue, I recommend: - Visit [Documentation]() [(3) ]() - Visit [Hire certified Retell partner]() Could you provide more context about your setup? For example: - Are you using numbers purchased from Retell or imported via SIP trunking? - Is this happening on inbound or outbound calls? - What does your phone number configuration look like in the dashboard? This additional information would help diagnose the issue more effectively.

​ To learn more, see the sources I considered: [[1] Twilio](https://docs.retellai.com/deploy/twilio) [[2] Import Phone Number](https://docs.retellai.com/api-references/import-phone-number) [[3] Debug outbound connection issues](https://docs.retellai.com/reliability/debug-outbound-call) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.