We pick i.root-servers.net, one of the 13 root servers (1), and ask it about herbalifecentral.co.za and learn that za is delegated to five name servers (2), so we ask disa.tenet.ac.za where we learn that co.za is delegated to seven name servers, including ns0.neotel.co.za (3), so we ask that one and get the following answer: