The WHOIS system originated as a method for system administrators to obtain contact information for IP address assignments or domain name administrators. The use of the data in the WHOIS system has evolved into a variety of uses, including:

• Supporting the security and stability of the Internet by providing contact points for network operators and administrators, including ISPs, and certified computer incident response teams.
• Determining the registration status of domain names
• Assisting law enforcement authorities in investigations for enforcing national and international laws
• Assisting businesses, other organizations and users in combating fraud, complying with relevant laws and safeguarding the interests of the public.