Remove a Name Server from All Reverse Zones

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# The following section contains all input parameters

$DC = “DC1.contoso.internal” # Domain controller to be used

$nameserver = “DNS.contoso.internal” # Nameserver to remove

#

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$list = Get-DnsServer -ComputerName $DC | select -Property serverzone -ExpandProperty serverzone | where  {$_.isdsintegrated -eq “true” -and $_.isreverselookupzone -eq “true”} | select -Property zonename

foreach ($zone in $list ) {Remove-DnsServerResourceRecord -ComputerName $DC -ZoneName $zone.zonename -RRType Ns -Name “@” -RecordData $nameserver -Force}