We pick d.root-servers.net, one of the 13 root servers (1), and ask it about forodha.kra.go.ke and learn that ke is delegated to four name servers (2), so we ask ns.anycast.kenic.or.ke where we learn that kra.go.ke is delegated to four name servers, including ns1.iafrica.com (3), so we ask that one and get the following answer: