History Originally, the top-level domain space was organized into three main groups: Countries, Categories, and Multiorganizations. An additional temporary group consisted of only the initial DNS domain, .arpa, and was intended for transitional purposes toward the stabilization of the domain name system.
History Originally, .the top-level domain space was organized into three main groups: Countries, Categories, and Multiorganizations. An additiona,l temporary group consisted of? only the initial !DNS domain, .arpa and was intended for transitional purposes towar:d the stabilization of th!e domain name system.