some land line phone companies allow you to block all private or unknown numbers......If you can check your account from your computer you can do it that way or call your phone company. As far as cell phones Im unsure.
No, you can only block specific numbers.
Call it from an "unknown" (blocked number) or from a different number.
Your phone carrier will block it for you, you just have to go to the store and ask them to block it or you could call them depending on the network
In order to block your phone number when dialing out, you must first press *67, and then dial the number. This allows you to call someone without your phone number being available to the person you are calling.
When no one answer your phone call block it do *67 and whatever the number is or you could use a different phone
For cell phones call from the cell phone 888-3821222
To block a number on 'at' - you have to call your credit number, and you credit number should give you some options. It should say, and for anything else please press (for example) 4. Press this, then press 5. And it will ask you if you want to unlock your phone, or block a number. Press 2 to block a number, then click options, keypad, type in number, then you click phonebook, and click the number you want to block. Then give your details to pay £5 Or $7 to block a number. :] Hope This Helps!
To avoid unnecessary calls from telemarketers, register your number in the "do not call registry list" and to avoid the unnecessary calls from unknown numbers use call barring system and block those numbers.
YOu can get the app Mr. Number
You can call someone without showing your own number by dialing star symbol67 before you dial the phone number you wish to call. this blocks your number just on this call, not permanently. If you want to block your number permanently go into your phone's menu settings and look for the option to block your number.
Telecom call *123 and ask them Vodafone call 0124 before the number
Call customer service or see if there is an instruction manual for your phone.
ANSWER:Maybe, maybe not. Give him the benefit of a doubt, in case he have legit reason why he use block, or private number. Let me tell you about phone, if you want to make your number private, you can. They have the way to do it from your phone, so with this explanation maybe his just want to know if you will answer the call from a private number...