I would like to know, if a root server could delegate different subzones of a zone to different nameservers and the rest to a default nameserver.
E.g. I have the zones "thing.", "some.thing.", "any.thing", "i.do.some.thing.", "i.do.any.thing.". How should the root zone file look like, if I want the following behaviour:
Every query to "i.do.some.thing" and "*.i.do.some.thing" go to nameserver a
Every query to "i.do.any.thing" and "*.i.do.any.thing" go to nameserver b
Remaining queries to "some.thing" and "*.some.thing" go to nameserver c
Remaining queries to "any.thing" and "*.any.thing" go to nameserver d
Remaining queries to "thing" and "*.thing" go to nameserver e
Is this possible for a root name server or can only the authorative nameserver do this?