There are two copies of the NS records for each zone: one in the root node of the zone itself, and another at the point of delegation in the parent zone. These two copies must be kept synchronized manually. Whenever changes are made to the NS records of a zone, the administrator of the parent domain should be notified so that he can make the corresponding changes at the delegation point, too.

If the parent domain is also a zone of the local NameSurfer, the delegation is updated automatically if the "Attempt to synchronize delegation in parent zone" checkbox is checked and the user has sufficient access rights to edit the parent zone. When doing an automatic update on the parent, NameSurfer will also check for any conflicting nodes that belong within the perimeter of the subdomain zone, and an automatic transfer of those nodes from the parent zone will be initiated.