Whenever you register a domain name with any domain registrar such as Rudra IT Services, ICANN demands the domain registrar to provide the personal contact information to the database of WHOIS. It becomes available to the public, once your list appears in this particular online directory.
Rudra IT Services has to meet the terms and abide by the rules set by ICANN. But still, they ensure to not post information about people who don't want their information to be circulated or shown to the general public present over the internet. They are very much concerned with their privacy, and so they offer to provide private domains, which cost only a little extra than the normal domains, and will never show the actual user's information, instead will only show the contact information of Rudra IT Services.
But still, if you choose to have your information available for the public viewers in WHOIS, Rudra IT Services will submit your information that includes your name, address, phone number, email address and the expiry date of the domain to WHOIS database. The hosting IP address of your website and the hostname will also be displayed along with the above said personal information of yours.