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  2. Need to Make a Private Call? Here's How to Block Your Number

    www.aol.com/private-call-heres-block-number...

    There are multiple ways to block your phone number when calling someone.

  3. Caller ID - Wikipedia

    en.wikipedia.org/wiki/Caller_ID

    Caller ID blocking is the common term for a service by which a caller can prevent the display of the calling number on the recipient's telephone. Blocking the number is formally referred to as calling line identification restriction (CLIR).

  4. *82 - Wikipedia

    en.wikipedia.org/wiki/*82

    If Caller ID is subscribed to or enabled on the line receiving the call, the unblocked phone number and registered name is displayed – unable to determine that the caller subscribes to outgoing callerID blocking or that *82 has been dialed to temporarily override that subscription. *82 can be dialed from U.S. land-line house phones and ...

  5. Call blocking - Wikipedia

    en.wikipedia.org/wiki/Call_blocking

    These devices rely on caller ID information and thus a phone blocker requires a caller ID service active on the line for blocking to function. Treatment of blocked calls may include: Sending the caller to voicemail; Sending the caller to busy signal; Sending the caller to "Number No Longer in Service" Sending the caller to "Keep Ringing"

  6. Caller ID spoofing - Wikipedia

    en.wikipedia.org/wiki/Caller_ID_spoofing

    Example of caller ID spoofed via orange boxing; both the name and number are faked to reference leetspeak. Caller ID spoofing is a spoofing attack which causes the telephone network's Caller ID to indicate to the receiver of a call that the originator of the call is a station other than the true originating station. This can lead to a display ...

  7. Anonymous call rejection - Wikipedia

    en.wikipedia.org/wiki/Anonymous_call_rejection

    In many voice telephone networks, anonymous call rejection (ACR) is a calling feature implemented in software on the network that automatically screens out calls from callers who have blocked their caller ID information. The caller usually hears a voice message explaining that their call cannot be connected unless they display their number.