Does the Iterative Request from a DNS caching server result in every zone cached in the domain? For example. AAA.BBB.CCC.DDD.com Does the Caching server caches the IP address of .com, DDD.com, CCC.DDD.Com, BBB.CCC.DDD.Com and AAA.BBB.CCC.DDD.com or it simply caches the AAA.BBB.CCC.DDD.com? Rgds Anibe Onuche