How to get rid of extra DNS records?

Question

Domain Name System

I have a domain controller along with a DNS server.
There are 2 zones on this DNS:
myzone.prod
somezone.prod
The first zone - it's "main" - domain. It contains all stations and servers.
The second one is for our external clients, they connect via VPN. They fall into a separate isolated VLAN.
In order for the application to work for external clients, there is a database server that is a member of the domain. At the same time, it has 2 adapters, each of which looks into its own subnet. The stack settings of each adapter indicate with which dns suffix it should register. Logically, the subnet adapter myzone.prod should be written to the first zone, the second to the second.
And anyway, ALL adapters climb into the main domain zone.
The AD server is available in both zones.
Screenshot -

And for some reason the timestamp is static.
How to get rid of it? And then some servers that are in myzone.prod are trying to access an inaccessible ip ...

Answer 1

DHCP server accidentally does not bring it here?