The domain name is the part of your Internet address to the right of your host name.  It is often something that ends in .com, .net, .edu, or .org.  If you are setting up a home network, you can make something up, but make sure you use the same domain name on all your computers.
Isem n taɣult d amur seg tansa-inek·inem n Internet ɣer tama tayeffust n yisem-inek·inem n usenneftaɣ. D ayen yezgan ikeffu n .com, .net, .educ neɣ .org. Ma yella tesbeddeḍ azeṭṭa agejdan, tzemreḍ ad ternuḍ kra maca ḍmen belli tseqdaceḍ yiwen yisem n taɣult ɣef meṛṛa iselkimen-inek·inem.