You always have control over who can see your contact details (telephone number, e-mail address, address) on XING. This is how it goes:
- Klick on Settings in the upper right corner of the XING website and select Settings. (In the XING apps, tap on your profile image in the top left corner, choose Settings and then XING Settings).
- Click on Privacy.
- Now select either Contact data and make the desired changes.
The following links take you directly to the respective settings: