### Answer I don't have information about filtering inbound spam callers or blacklisting specific phone numbers in the available sources. The documentation I have access to primarily covers outbound call issues, platform features, and general AI voice agent capabilities, but doesn't include details on inbound call filtering or number blacklisting functionality. For help with blocking spam callers or implementing a blacklist for your Retell AI setup, I'd recommend: Check out these potentially useful sources: - [Debug outbound connection issues]() - [Platform Changelogs | Retell AI]() You might also want to reach out directly for support on this specific feature: - Visit [Documentation]() - Visit [Hire certified Retell partner]() Would you like me to try providing a general answer based on common telephony practices, or would you prefer to wait for official guidance on Retell AI's specific capabilities for this use case?

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