Shulou(Shulou.com)06/02 Report--

This article will explain in detail what the whois query is, and the content of the article is of high quality, so the editor will share it with you for reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

Whois is a transport protocol used to query the IP and owner of a domain name. Whois query is a database used to query whether the domain name has been registered, as well as the details of the registered domain name, including: domain name owner, registrant, registration time, contact number and domain name status.

With the development of network communication technology and the rapid popularization of web applications, domain name information query through web system has become the current mainstream. Basically every website that provides domain name registration services can query whois.

When you register a domain name, you need to use the whois query to see if the domain name is registered. When you find a high-quality website, want to contact each other, exchange resources, but can not find any contact information, you can also use the domain name whois query, try to get owner information. Of course, the premise is that the domain name holder does not take strict privacy measures.

Because some registrars block the whois information of international domain names, if you want to inquire, you can only contact the corresponding registrants. This protection mechanism is to prevent someone from maliciously using the contact information of this whois information to expose the customer's private information.

The working process of whois query

Whois service is an online "request / response" service. WHOIS Server monitors port 43 in the background. When an Internet user searches for a domain name (or host, contact, and other information), WHOIS Server first establishes a TCP connection with Client, then receives the information requested by the user and queries the background domain name database accordingly. If there is a corresponding record in the database, it will feed back the relevant information such as owner, management information and technical contact information to Client. When the Server output finishes, Client closes the connection, and a query process ends.

About what the whois query is to share here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.