Updated: 03/05/2023 by Computer Hope

Domain may refer to any of the following:

1. With an Internet address or name, a domain or domain name is the location of a website. For example, the domain name "" points to the IP address "". Generally, it's easier to remember a name rather than a long string of numbers. A domain name contains a maximum of sixty three characters, with one character minimum, and is entered after the protocol in the URL (uniform resource locator), as shown in the following example.

URL or Internet address

What is a top and second level domain?

In our example of the "" domain name, there are two parts of the domain name. First is "google," which is called the SLD (second-level domain) and ".com," which is the TLD (top-level domain). See our top-level domain definition for further information on top level domains.

What was the first domain?

The first Internet domain name "" was registered by Symbolics, a Massachusetts computer company on March 15, 1985.

When deciding on a domain name, its a good idea to keep it simple, something that is easy to remember. Additional promoting tips for websites is on our guide to promoting your content on the web. To register or look up a domain name, we recommend visiting GoDaddy or Network solutions; both companies are domain name registrars.

2. With a computer network, a domain is a group of resources assigned to a specific group of individuals. It is used to divide global areas or departments of a corporation. A domain may need to be specified when mapping a network computer or drive.

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