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How do I stop unknown phone numbers from calling me?

    Use one of the two options below to stop receiving calls from unknown phone numbers.

    Note: To block all calls from callers that have their caller ID blocked, contact customer support.

    If the caller has their caller ID blocked, the system can ask them to identify themselves first, once they say their name, the call will go through to the system.

    1. Sign in at
    2. Select Extensions and then select Edit next to the desired extension.
    3. Next to the forwarding number, select Edit.
    4. From How should Grasshopper handle calls to this number?, select Callers will be asked for their name, then announced to you.
    5. Select Save & close.