We pick c.root-servers.net, one of the 13 root servers (1), and ask it about allaneng.webafrica.org.za and learn that za is delegated to five name servers (2), so we ask sns-pb.isc.org where we learn that org.za is delegated to five name servers, including za-ns.anycast.pch.net (3), so we ask that one and learn that webafrica.org.za is delegated to two name servers (4), so we ask ns1.webafrica.co.za and get the following answer: