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A repository of PowerShell Scripts to automate a variety of IT related maintenance tasks.

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Test-DNSPropagation.ps1

Description

@GitHub Copilot - Welcome @BanterBoy, I’m your Copilot and I’m here to help you get things done faster. I can identify issues, explain and even improve code.

You can ask generic questions, but what I’m really good at is helping you with your code. For example:

Generate unit tests for my code Explain the selected code Propose a fix for the bugs in my code If you want to learn more about my capabilities and limitations, check out the Copilot documentation.

I’m powered by AI, so surprises and mistakes are possible. Make sure to verify any generated code or suggestions, and share feedback so that we can learn and improve.

@BanterBoy: - Explain what the script does and why it is useful.

@GitHub Copilot -

Script

function Test-DNSPropagation {

    [CmdletBinding()]

    param (
        [Parameter(Mandatory = $True,
            HelpMessage = "Please enter DNS record to be tested)",
            ValueFromPipeline = $false,
            ValueFromPipelineByPropertyName = $True)]
        [string[]]
        $Records,

        [Parameter(Mandatory = $True,
            HelpMessage = "Please select DNS record type)",
            ValueFromPipeline = $false,
            ValueFromPipelineByPropertyName = $True)]
        [ValidateSet('A', 'CNAME', 'MX', 'NS', 'PTR', 'SOA', 'SRV', 'TXT')]
        [string[]]
        $Type
    )

    begin {

    }

    process {

        foreach ($Record in $Records) {
            Try {
                Write-Warning -Message "Testing Google Public DNS"
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 8.8.8.8
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 8.8.4.4

                Write-Warning -Message "Testing Quad9 Public DNS"
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 9.9.9.9
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 149.112.112.112

                Write-Warning -Message "Testing OpenDNS Home Public DNS"
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 208.67.222.222
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 208.67.220.220

                Write-Warning -Message "Testing Cloudflare Public DNS"
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 1.1.1.1
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 1.0.0.1

                Write-Warning -Message "Testing CleanBrowsing Public DNS"
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 185.228.168.9
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 185.228.169.9

                Write-Warning -Message "Testing Verisign Public DNS"
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 64.6.64.6
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 64.6.65.6

                Write-Warning -Message "Testing Alternate DNS Public DNS"
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 198.101.242.72
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 23.253.163.53

                Write-Warning -Message "Testing AdGuardDNS Public DNS"
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 176.103.130.130
                Resolve-DnsName -Name $Record -Type $Type -ErrorAction Stop -Server 176.103.130.131
            }
            Catch [System.Exception] {
                Write-Verbose "$Record not found!" -Verbose
            }
            Catch {
                Write-Verbose "Catch all" -Verbose
            }
        }

    }

    end {

    }
}

# Test-DNSPropagation -Records "mail.example.co.uk", "mail2.example.co.uk", "mail3.example.co.uk" -Type A

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