Does *31* hide your number?

Does *31# Hide Your Number When You Call?

If you've ever wanted to make a call without revealing your phone number, you might have heard about using *31#. The short answer is: yes, it can. Dialing *31# before a number temporarily blocks your caller ID for that specific call — a useful trick if you're reaching out without wanting to share your digits.

This feature, known as caller ID restriction, works on most mobile networks in many countries, especially in Europe and parts of Asia. It's simple: just open your phone’s keypad, type *31#, then enter the 10-digit number you wish to call. For example: *31#0401234567. Hit call, and your number will stay hidden from the recipient.

It's important to note that this isn’t a permanent setting. Each time you want to hide your number, you’ll need to dial *31# again. If you prefer a more permanent solution, most smartphones allow you to disable caller ID globally in settings — though this varies by carrier and region.

Also, keep in mind that some organizations or phone systems may still detect your number despite the block, and certain countries don’t support this code at all. In the U.S., for instance, people often use *67 instead of *31#, showing how codes can differ by location.

Ultimately, *31# is a quick, easy way to maintain privacy on a call-by-call basis. Whether you're making a sensitive call or just value your anonymity, it’s a handy tool to know — no app or subscription required. Just dial and disappear.