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When you register a domain name (for example, example.com or example.com.ru), the Internet Corporation for Assigned Names and Numbers (ICANN) requires your domain name registrar to submit your personal contact information to the Whois database. Once your listing appears in this online directory, it is publicly available to anyone who chooses to check domain names using the Whois search tool (for example www.whois.ru). You can perform a Whois search using Google: just search for [ whois example.com ] or [ www.example.com.ru whois ].

Whois (pronounced as the phrase who is) is a query/response protocol that is widely used for querying databases in order to determine the registrant or assignee of Internet resources, such as a domain name, an IP address block, or an autonomous system number. For example, www.example.com.ru translates to Another example, www.example.com translates to Domain example.com resolve to a server managed by ICANN. Whois lookups were traditionally performed with a command line interface application, but now many alternative web-based tools exist. For example http://www.whois.ru, http://www.whois.com, http://www.whois.com.ru. Whois services are typically communicated using the Transmission Control Protocol. Servers listen to requests on the well-known port number 43.

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. In some countries, specialized non-governmental entities may be involved in this work;
  • Assisting in the combating against abusive uses of Information communication technology.
  • Facilitating inquiries and subsequent steps to conduct trademark clearances and to help counter intellectual property infringement, misuse and theft in accordance with applicable national laws and international treaties;
  • 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.

Discover who owns a website or domain name by searching our Whois database:


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