Dial a caller ID block code before the phone number. In the USA, dial *67 proceeding the number. In the UK, dial 141. So for example if you need to call 212-555-5555, Dial *67-212-555-555 instead. Your caller will see a message that says "caller ID blocked."
*67
USE CALLER ID!! duuh
Any whole number can be divided by 1 without leaving a remainder.
It defines whether your phone number will be displayed on someone's caller ID unit when you call them. Select 'no' if you wish your number to remain private.
If you want to call someone without Caller ID giving you away, you can always dial *69 (star sixty-nine) before dialing the number to show up as a private number.
* 67
It will be a factor of the number
Any number. Can be divided by 1 without remainder.
Any multiple of that number can be.
They are factors of that number
If you do not recognize the number, it is probably because the caller is calling someone who owned the phone number before you.
well u can not i think but u can *67 someone and not show on caller ID