Domain name (English: domain name) is a unique name given to identify the name of a computer server such as a web server or email server on a computer or internet network. Domain name serves to facilitate the user on the internet when accessing the server, but also used to remember the name of the server visited without having to know a row of complicated numbers known as IP addresses. This domain name is also known as a unity of a website such as "wikipedia.org". Domain names are sometimes referred to as URLs, or website addresses.

At first domain names can only be written with the 26th Latin alphabet, but it is now possible to use foreign alphabets with the internationalization of domain names.

.com (commercial) is the top level internet domain (TLD) that is used as an Internet domain name. .com is one of the first TLDs in the world. .com was inaugurated in 1986 and became the largest domain and domain that is often used throughout the world. It was first administered by the United States Department of Defense before it was transferred to the NSF in 1993. In 1995, the NSF and Network Solutions inaugurated tariffs for .com domains by 50 dollars per year, 35 dollars for NSI and 15 dollars for the government. Now the .com domain is managed by VeriSign.

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org is the top-level internet domain (TLD) used in the Internet Domain Naming System. The .org name is short for the organization. This domain was opened in 1985. Initially this domain is intended for non-profit organizations, but lately many are also used by schools, personal sites; open-source project; sometimes for commercial companies. The use of .org domain increased sharply, in the 1990s less than one million users, until June 2012 had more than ten million users.