Specifically, adding *67 to the start of any phone number will block your caller ID when you call that number. This is a quick and temporary way to block your number when making calls.

Other Ways to Block Your Number AKA Make a Private Call If your cell phone carrier does not allow you to block your number, there are still a few timeless methods that work for making private calls.

You can block a number on your phone so that a person or company can't call or text you from a particular number. Here's how to do it on any device.

How to Block a Number on Your iPhone There are a number of ways to block someone from your iPhone. By blocking them, you'll be sending them directly to voicemail when they call you.

From Google Voice, you can block a phone number from ringing on your cellphone with call rules designed to help you filter your incoming calls.

Kurt "Cyberguy" Knutsson outlines the simple steps to block unknown calls on your Android and iPhone so you can avoid those spam calls.

Many smartphones have the option to hide your number when making a phone call built in, making it easier to keep your number private.

How to Block Looking Up Your Cell Phone Number. The Federal Communications Commission requires phone carriers to provide a method of blocking caller ID to protect callers' privacy.

Depending on your phone, here are some tricks you can use to figure out if someone has blocked your phone number.