NS Records indicate which name servers are authoritative for a domain or subdomain. NS Records are used in the event that another external DNS provider will be used in conjunction with Constellix DNS. They can also be used if a sub domain delegation will take place to external name servers. In most cases, no NS records need to be added for a domain as Constellix DNS defines the Constellix name servers under the system NS records section.
A. Name: The hostname for the record. To set the record for the root domain (@), leave this field blank.
B. TTL: Time to Live, measured in seconds, determines how long the record is cached in resolvers. For more information on best practices for TTLs, click here.
C. Disable Record: Information on the NX Domain feature can be found in the Disabling a Record tutorial.