> $dcs = (Get-ADDomainController -Filter *).Name
> foreach ($dc in $dcs) {
    Add-DnsServerClientSubnet -Name "DE-Prod" -IPv4Subnet "10.0.101.0/24" -ComputerName $dc
    Add-DnsServerClientSubnet -Name "CA-Prod" -IPv4Subnet "10.0.102.0/24" -ComputerName $dc
    Add-DnsServerClientSubnet -Name "JP-Prod" -IPv4Subnet "10.0.103.0/24" -ComputerName $dc
  }