What is a domain name

Every house, every company, and every organization has an address. With an address, you can receive mail, and people can find and contact you. And this principle works exactly the same on the Internet. In order to find content or a specific website, it is necessary that you know its address. An address on the Internet is called a domain name. Some examples of domains are edis.at, wikipedia.org, youtube.com and google.com.
Domains were introduced to make the Internet more user-friendly. All computers and servers connected to the Internet communicate with each other via so-called 'IP addresses. Behind every domain on the Internet is an IP address to uniquely identify a server/computer - like a subscriber's phone number. When you visit a website, your computer, tablet or smartphone automatically connects to this unique IP number from the website you are visiting. Since human brain remembers names more easily than numbers, it was decided to link this IP address to names. A domain is an easy-to-understand, searchable Internet address used to easily dial-up to and connect to these technical numbers (IP addresses).
The structure
A domain consists of two parts: a namespace (also known as a second-level domain or SLD) and an extension (TLD or top-level domain). For the domain edis.at, "edis" is the name and ".at" is the extension, in this specific case a country domain that stands for Austria. The full address of a website, e.g. as it is right now in the address bar of your browser (e.g. https://support.edis.at) is called the URL.

Limited lifetime
When someone registers a domain, he gets exclusive rights to use that name for the period of the registration. The owner of a domain is therefore not automatically the permanent owner of this domain. After a period of usually one or two years, a domain registration must (can) be renewed. Providers usually handle this in such a way that the domain name is automatically renewed to ensure that it is not lost if you do not respond in time. Domain owners can sell their exclusive usage rights (transfer a domain to a new owner), move the domain to another provider (registrar transfer), or decide not to renew the domain and request deletion by canceling it. In the latter case, the domain is deleted by the registry and becomes available for registration again.

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