By default, the contact information specified in the questionnaire is used in the public domain in the Whois service. To protect this data from illegal actions such as spam or hacking, it is recommended to provide other contact information for public publication.
Changing the public contact information for domains .su and third-level domains
Changing public contact information for International and New gTLD domains
For international, foreign and New gTLD domains, the "Whois Privacy Protection" service is available, which allows you to hide the contact details of the domain administrator.