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Anonymous calls from your fixed line

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

  • Hiding your telephone number once (for a specific call).
    Press *31*Telephone number# on your phone. Instead of Telephone number key in the number of the person you want to call. Your number will then not be displayed during that particular call.
  • Permanently hiding your telephone number
    Dial the toll-free number 1987, select option 3 "Basic services" and then option 3 "Number display restriction". Do you wish to display your number again? Two options are available:
    • Display your telephone number once (for a specific call): press #31*Telephone number# on your phone. Instead of Telephone number, key in the number of the person you want to call.
    • Permanently display your phone number again: follow the same steps as those you took to permanently hide your phone number.

Do you want to call anonymously with your mobile phone? Find out how to hide your mobile number.

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