What is DNS (Domain Name System)?

DNS stands for Domain Name System. This is a network service that is used to resolve IP addresses. The core function of the DNS lies in simplifying the addressing of websites. For this purpose, the domain name system assigns a legible domain such as www.yourdomain.de to every IP that is present in a complex combination of numbers and letters. The DNS is thus tailored to the human user, who can remember names much more easily than the complex letter and number codes of the IP.

The domains assigned in the DNS are made up of different levels. The Internet address is read from the right, starting with the domain ending such as .com or .de and resolved sequentially. In this way, website operators can assign an easily understandable designation to the IP of their web server, with the first two elements from the right being adjustable. The third-level domain, or top-level domain, is used as the country code, while the middle part of a domain is the actual domain name. The www. in a domain is the same for most domains. The domain extension and the domain name can be rented if they have not yet been taken. An annual fee is due for this. A hoster like centron.de takes over this service and ensures that the DNS assigns the registered domain to the appropriate IP of the web server. Both storage space on the server and hosting, i.e. the use of the domain name system and its setup, are included in the corresponding offers.

A DNS can be used locally in your own network. Above all, medium-sized to large companies use this to organize their IT infrastructure. An alternative to the domain name system in local networks is WINS, which is used by Windows.

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