If you own a website

[Mahmud]

If you own a website, pay to have your Domain Name Registration information “unlisted”:
  It's a legal requirement that all domain names have valid contact information posted on the Internet and you can view this contact information on websites such as www.whois.com. Spammers regularly visit the “whois” database to harvest email addresses. Make sure the web hosting company gives you the option to pay to have your information unlisted. What shows up instead for your domain is the contact information for your web hosting company.