DNS zones are organized within a DNS View. From the Cloud Services Portal, click Manage -> DNS -> Zones. All existing views are shown under All DNS Views. If there are multiple views, you must click the particular DNS view to drill down to view the zones and subzones. If there are no DNS views, you must create them before adding a zone. For more information about creating a DNS view, see Configuring DNS Views.
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You can also perform the following in this tab:
- Click
to reorder the columns or to select the columns to be displayed.
Click
-> Edit or select the check box for the respective record and click Edit to modify a zone.Select a zone to view the additional details. If you do not want to view the details in the right panel, click
.Click
to view the zone details or click 
to view the details in a tabular format.Enter the value that you want to search in the Search text box. BloxOne DDI displays the list of items matching the keyword in the database. You can search zones by Name, DNS Name, Description, Tags (Tag key and/OR Tag value), Type, and DNS Provider. You can search resource records by Name, DNS Name, Description, Tags (Tag key and/OR Tag value), Type, Data, and Record Source.
Click
to filter the objects by name and description. To save a filter after selecting the required parameters click 
, specify a name for the filter, and click Save & Close. To reload a previously saved filter, click 
and select the required filter. - Click -> Move to Recycle Bin to move the object to the recycle bin. You can restore the object later or delete it permanently as required. For more information, see Recycle Bin.
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You can also create one or more secondary DNS servers for a zone. A secondary server for a zone receives read-only zone data from the primary server. If a zone is part of an internal DNS structure for a private network, the inclusion of a secondary DNS server is optional, though highly recommended. If a zone is a part of an external DNS structure for a public network such as the Internet, then a secondary server in a different subnet from the primary server is required. This requirement provides an additional safeguard against localized network failures causing both primary and secondary DNS servers for a zone to become inaccessible.
You can specify the primary and secondary server for a zone or you can specify a DNS server group. A DNS server group is a collection of one or more primary servers and one or more secondary servers. For information on DNS server groups, see Configuring DNS Server Groups.
The following is an example of an IPv4 reverse-mapping zone hierarchy:
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