Secondary DNS provides redundant name service for a domain that you own, whose DNS you manage on your own nameserver(s). The servers providing Secondary DNS are located on separated networks to prevent any downtime. With Secondary DNS even if yours goes down, we will continue to resolve your queries.
How to subscribe to this service
Send an official letter requesting this service directed to the head of ISU.
Send an email to firstname.lastname@example.org with the IP of your master DNS server.
Upon ISU confirmation, you may contact Saudi NIC ( www.saudinic.net.sa ) at CITC to update them with the new changes.
Should you need more details or have questions about this service, please do not hesitate to contact us at email@example.com .