A stub ZONE is a read only copy of a zone that contains only those resource records which are necessary to identify the authoritative DNS servers for that particular zone. A stub zone is practically used to resolve names between separate DNS namespaces. This type of zone is generally created when a corporate merger or acquire and DNS servers for TWO separate DNS namespaces resolve names for CLIENTS in both namespaces.
A stub zone contains:

• The start of AUTHORITY (SOA) resource record, name server (NS) resource records, and the glue A resource records for the delegated zone.
• The IP ADDRESS of one or more master servers that can be used to update the stub zone.

A stub zone is a read only copy of a zone that contains only those resource records which are necessary to identify the authoritative DNS servers for that particular zone. A stub zone is practically used to resolve names between separate DNS namespaces. This type of zone is generally created when a corporate merger or acquire and DNS servers for two separate DNS namespaces resolve names for clients in both namespaces.
A stub zone contains: