You can lookup ~1500 TLDs' domain whois info
Domain WHOIS is a query and response protocol that is used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system,etc.
Purpose of Whois 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, including, in some countries, specialized non-governmental entities may be involved in this work;
-Assisting in combating abusive uses of information communication technology;
-Facilitating inquiries and subsequent steps to conduct trademark research and to help counter intellectual property infringement;
-Contributing to user confidence in the Internet as a reliable and efficient means of information and communication and as an important tool for promoting digital inclusion, e-commerce and other legitimate uses by helping users identify persons or entities responsible for content and services online;
-Assisting businesses, other organizations and users in combating fraud, complying with relevant laws and safeguarding the interests of the public.