Removing zone delegation also removes the name server A and PTR Records

Question

It seems that if you delete a delegated zone with the powershell command Remove-DnsServerZoneDelegation, it also removes the A and PTR record for the NS records defined in that zone. Is this expected? I had a misconfigured delegated zone from previous technical debt had the name servers of the current dns servers. When I removed it it also removed the A and PTR records of the dns servers. They re-added themselves via the standard nic dns registration after a short while but I am curious why that happened. This suggested posting https://social.msdn.microsoft.com/Forums/en-US/fe075bf3-69f8-4dcd-aa28-d0638536111b/remove-name-server-from-a-delegated-zone-without-removing-the-a-record-for-the-name-server?forum=winserverNIS seems to suggest that this is how the command works?

Answer 1

Hello there,

If you specify a DNS server for the child in this cmdlet, the cmdlet removes that server from the delegation. If you remove the last DNS server, or if you do not specify a DNS server, the cmdlet removes the delegation from the zone, after confirmation.

Depending on the configuration, you may or may not be able to delete or schedule the deletion of a zone and all its contents.

You can find more info regarding this command here https://learn.microsoft.com/en-us/powershell/module/dnsserver/remove-dnsserverzonedelegation?view=windowsserver2022-ps

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