How you hide your number from whome you call?

Answer 1

Search the 'net for "Caller ID Spoofing". There are several services out there that offer you one free trial call, and for a small fee a set number of minutes.

Some even let you change the pitch of your voice (man sound like a woman or a woman sound like a man). The pitch thing does fool people, but it sounds strange. Anyone who is mildly suspicious would detect that voice-changing technology is being used.

I do not know if this works for 800 or 866 numbers, as they use ANI (Automatic Number Identification), not caller ID.

Of course there is always *67 (block caller ID), but many people have their lines set to stop calls that have caller ID disabled. The spoofing technique circumvents that.

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Note you cannot hide or spoof your number from a toll-free call (800, 866, etc.). The called party will get your number regardless of any caller ID blocking.

Answer 2

You can hide your number when making a call by dialing *67 before entering the phone number. This feature allows you to show up as "Private Number" or "Unknown" on the recipient's caller ID. Please note that this feature may not work in some countries or for certain phone carriers.