How to Block Caller ID With ATT Phones

Call Blocking Per Call
1. Listen for a dial tone on your phone.
2. Press *67 and wait until you hear a second dial tone.
3. Dial the outgoing phone number. The receiver of your call will not see your name or phone number. This applies only to this one call. If you want to continue blocking your name and number, you must repeat Steps 1 to 3 for each call made. This feature is free with your AT&T service.
4. Deactivate Call Blocker Per Call. The feature is automatically deactivated once you hang up from the call.
Call Blocking Per Line (Complete Blocking)
5. Call 611 from your mobile phone or 1-800-331-0500 from a landline to speak to an AT&T representative and subscribe to the Caller ID Block feature. There is no charge for this service.
6. Begin making phone calls. The display of your name and number will be blocked on all outgoing calls you place from the line in which the Call Blocking service has been activated.
7. Deactivate Call Blocker Per Line on a Per-Call basis. Listen for the dial tone and press *82. Place the call and your Call ID information will be seen by the recipient. With Call Blocking Per Line, you will need to press *82 each time you want your name and number to be seen by the receiver.