The following operations can be performed on "dns subnetcache":
FLushes a specified ECS subnet or all cached ECS subnets from the DNS cache on the NetScaler appliance.
flush dns subnetcache (<ecsSubnet> | -all)
Flush all the ECS subnets from the DNS cache.
Displays all the domains for which ECS records are cached for the given ECS subnet. It also displays the type of dns records cached for every domain associated with the subnet. If a subnet is not specified, all the configured ECS subnets on the NetScaler appliance are shown.
show dns subnetcache [<ecsSubnet>]
An array of record types associated with the domain name.