A Host (A) record specifies a 32-bit IP address for forward host-name-to-IP-address mapping.
To add an Host (A) record:
If you do not want to create a Reverse Address record now, you can manually add a Reverse Address (PTR) record for reverse lookup later.
Important: Before you add a Host Record with the PTR option, you must create the zone to which this record points; otherwise, the reverse pointer record will not take affect.