removing old name servers listed in Active Directory DNS

If I go into the properties of some of my Active Directory DNS zones, and look at the namerservers tab, I see old domain controllers listed there.  How can I safely remove these?  

My thought is to go into DNS, highlight the zone, right click into "properties", then check each and every folder looking for any mentions of old DNS servers.  Will removing the records this way also remove them from the "nameservers" tab?
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npinfotechAsked:
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Jose Gabriel Ortega CastroEE Solution Guide/Topic Advisor and CEO Faru Bonon ITCommented:
Ibrahim BennaTechnology LeadCommented:
What happened to the old domain controllers? As Jose is implying, they may have not been properly decommissioned. I would also suggest you run the steps he has outlined and make sure you have everything cleaned out as required.
Shaun VermaakTechnical SpecialistCommented:
If I go into the properties of some of my Active Directory DNS zones, and look at the namerservers tab, I see old domain controllers listed there.  How can I safely remove these?  If I go into the properties of some of my Active Directory DNS zones, and look at the namerservers tab, I see old domain controllers listed there.  How can I safely remove these?  
If you already removed DC, simple delete them out of this list

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npinfotechAuthor Commented:
The domain controllers were removed long ago.  It appears just dns wasn't fully taken care of though.
SteveCommented:
The domain controllers were removed long ago.
It's been discussed above that maybe they weren't removed properly. Decommissioning domain controllers should follow a specific process, with DNS objects normally being handled within the process.
I recommend following the link from @Jose Gabriel Ortega Castro as it may be the best path to take.

If you are happy the DCs were decommissioned properly however and this is definitely just some old DNS records, you can amend (remove) nameservers by right-cliking on the DNS zone and selecting the Nameservers tab.
npinfotechAuthor Commented:
I am satisfied that the old domain controllers have been removed properly.   I just see a bunch of NS records for old domain controllers in some zones.

If I remove a server from the list of servers in the name servers tab, will these old individual ns records also be deleted automatically?
Shaun VermaakTechnical SpecialistCommented:
Yes, and NSLOOKUP DomainName.com will not show them anymore
npinfotechAuthor Commented:
I haven't deleted any records yet, and nslookup says the old servers cannot be found anyway.
SteveCommented:
assuming you mean they aren't being presented as nameserves any more, great!
Maybe you were just too quick ad hadn't allowed the changes to filter around.
Shaun VermaakTechnical SpecialistCommented:
Do not NSLOOKUP the server names, NSLOOKUP the Domain Name (FQDN)
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