Anonymous calls from your mobile

Do you want to make anonymous calls? Activate CLIR, the free option to hide your mobile number for just one call or permanently. Your telephone number will then no longer appear on the screen of the person you are calling.

  • Hide your mobile number once (for a specific call)
    Type in the short code #31#Telephone number on your mobile phone and press the call key. Instead of Telephone number, enter the number of the person you want to call. Your number will then not be displayed during that particular call.
  • Hide your mobile number permanently
    Choose one of the options below to permanently hide your number permanently during all your calls. Follow the same procedure if you wish to display it again.

Do you also want to hide the number of your fixed line?
Find out how you can hide your fixed line number.

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