DNS Resolution Check

This script verifies DNS resolution for a list of hostnames (stored in hostnames.txt). It can be helpful when troubleshooting DNS issues or verifying that specific domain names are reachable.

# Path to the file containing hostnames
$hostnameList = Get-Content -Path "C:\Path\To\hostnames.txt"

foreach ($hostname in $hostnameList) {
    try {
        $resolvedIP = [System.Net.Dns]::GetHostAddresses($hostname)
        Write-Output "$hostname resolved to IP: $($resolvedIP.IPAddressToString)"
    } catch {
        Write-Output "DNS resolution failed for $hostname"
    }
}

• Update "C:\Path\To\hostnames.txt" with the path to your file.

• Explanation: This script attempts to resolve each hostname to an IP address and outputs the result.