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Steps to assign BloxOne DDI host to Route53 an Azure synced zone:
Go to Manage > DNS.
Select the DNS view where your Azure DNS zones have been synced.
Select Azure DNS synced zone and click Edit.
Select the Authoritative DNS Servers drop-down.
Drag and drop the BloxOne DDI service instance(s) that you wish to have service the zone from left to right.
Click Save & Close.
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