Hi @Lied, Let me see if I can help you out here.
I have translated your question to English as this is an International forum, please post any replies in English and it will be easier for me and other users to assist you.
I hope that I understand your question correctly, do you want to hide your own number from being visible when making a call?
Please check here to get instructions in how you do this. You can find it in the subject "To show or hide your phone number during outgoing calls"
If I have misunderstood in any way, please let me know. 
0online
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