README.md

Microsoft DNS server list all records

PowerShell script to query a given Microsoft DNS server for all available primary zones and list all records defined within of types:

• A
• AAAA
• CNAME
• MX
• NS
• PTR
• TXT

Usage

$ ./dnsserverlistallrecords.ps1 -DNSServerHostname MS_DNS_SERVER_HOSTNAME

dnsserverlistallrecords.ps1

param (
	[parameter(Mandatory=$true)] [string]$DNSServerHostname
)

Set-StrictMode -Version Latest


function getFullHostname($zoneName,$DNSRecord) {

	$hostName = $DNSRecord.HostName
	if ($hostName -eq "@") {
		return $zoneName
	}

	return "$($hostName).$($zoneName)"
}

function getDNSRecordValue($DNSRecord) {

	$recordData = $DNSRecord.RecordData;

	switch ($DNSRecord.RecordType) {
		"A" { return $recordData.IPv4Address }
		"AAAA" { return $recordData.IPv6Address }
		"CNAME" { return $recordData.HostNameAlias }
		"MX" { return "$($recordData.MailExchange) [$($recordData.Preference)]" }
		"NS" { return $recordData.NameServer }
		"PTR" { return $recordData.PtrDomainName }
		"TXT" { return $recordData.DescriptiveText }
		default {
			# skip record type
			return $null
		}
	}
}

# fetch all DNS server zones
Get-DnsServerZone `
	-ComputerName $DNSServerHostname | ForEach-Object {
		# skip zones which are not primary
		if ($_.ZoneType -ne "Primary") {
			return
		}

		$zoneName = $_.ZoneName

		# fetch all records for zone
		Get-DnsServerResourceRecord `
			-ComputerName $DNSServerHostname `
			-ZoneName $zoneName | ForEach-Object {

				# extract DNS record value based on type, skip record types we don't care for
				$recordValue = getDNSRecordValue $_
				if ($recordValue -eq $null) {
					return
				}

				# output hostname, record type, record value
				Write-Output "$(getFullHostname $zoneName $_)`t$($_.RecordType)`t$($recordValue)"
		}
}