Use *67 to hide your phone number
On a per-call basis, you can't beat *67 at hiding your number. ... The free process hides your number, which will show up on the other end as “Private” or “Blocked” when reading on caller ID. You will have to dial *67 each time you want your number blocked.
CAN A * 67 call be traced?
"As soon as the call is placed, it can be tracked and traced to where it is being originated." ... Dialing *67 may cloak your call from other Caller ID-equipped phones, but not from your carrier or the authorities.
Does * 67 work on blocked numbers?
Will using *67 before calling someone block my number permanently? No, it will not.
