Domain: The letter carrier for all levels
Without a unique address, no message would reach the recipient, even on the Internet. A 'domain' is a coherent sub-area within the Internet hierarchy that allows such exact addressing. The names of the domains - if not already assigned - can be freely chosen by network customers. The responsible registry is the NIC (Network Information Center) of the respective top-level domain, to which the endings on the far right of the Internet address refer (e.g. .de, .com or .org). In Germany, 'DENIC eG' registers all Internet addresses ending in .de.
The domain system resembles a widely ramified root system. At the top of the hierarchy is the root level, followed by the top-level domains and then the subordinate second- and third-level domains. In the address www.brm.de, for example, the 'www' is the root level that refers to the 'World Wide Web', the '.de' determines the German top-level domain, a 'brm' refers to our own domain at second level, and possible further additions at third and fourth level allow precisely defined pages on our homepage to be accessed.
Selecting and registering domains is one of our standard IT service tasks.