Your cell phone provider can tell you how to block your number. Dialing *67 and then continuing to dial the number you want to call is how to block your number from appearing on the phone you are calling. Well, it is the way it’s done, say experts but you don’t have any way of confirming if it’s working. You have to test it using some other phone with a caller ID near you like your home phone, or a family member's phone, to verify if it is working.

You may have your reasons for not wanting your cell phone number from appearing in the caller ID of someone. You can permanently do the call blocking, or you can do blocking per call. You don’t need to buy a cell phone blocker or device which can be expensive. How to block your number is easy and affordable.

Permanently blocking your number is done by requesting a “line block” from your mobile phone carrier. The customer service of your cell phone provider can process your application to block your number, so that your number will never show up when you call up anybody. You may also dial 611 from your cell phone for customer service. This is how to block your number permanently. The blocking system, however does not work for emergency services and toll free numbers. It will only work for individual calls and business calls.

If in the event that your request for permanent block is in force, and you want someone to see you’re calling them, you can dial *82 and then the number, so your number will show up in the recipients cell phone. You should remember that dialing *67 is how to block and dialing *82 is to unblock on a case to case basis.

But if your cell phone number is registering in the cell phones you call up, they have ways of looking up unknown cell phone numbers through some new internet websites that scan your phone number or the National Registry of Cellular Numbers.

The number code may differ according to areas and different phone providers for how to block your number, so you have to look it up in your local telephone directory or call your phone company’s customer service.