In the DNS Management service > DNS Management section (!), when adding a secondary zone, only F5 Cloud DNS servers appear in the list (secondary_zone.PNG).

For customer managing a lot of zones, it would certainly be a lot more practical to show all the authoritative DNS servers for that zone, especially the ones on the primary zone too, like for example how NS1 do (primary_zone_ns1.PNG)

We could use the NS records that we received during a successful transfer to that end.

secondary_zone.PNG

primary_zone_ns...

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