A fast way to import multiple DHCP scopes to a DHCP server. Some settings needs to be added on top level. For example DNS servers.

Required header in CSV:
name;description;startrange;endrange;subnetmask;scopeid;router

$dhcpserver = "1.1.1.1"
$scopes = Import-Csv -Path dhcp.csv -Delimiter ";"
foreach ($scope in $scopes)
{
	$name = $scope.name
	$description = $scope.description
Write-Output "Creating scope  $name"
Add-DhcpServerv4Scope -ComputerName $dhcpserver -Name "$name" -Description "$description" -StartRange $scope.startrange -EndRange $scope.endrange -SubnetMask $scope.subnetmask -State Active -LeaseDuration 1.00:00:00
Set-DhcpServerv4OptionValue -Router $scope.router -ScopeId $scope.scopeid -ComputerName $dhcpserver
}

This example uses invoke-webrequest to retrieve computer information from a company reporting webpage. Only text inside TD elements are stored in a array for future use and added to a PSObject.

function Get-ComputerInfo
{
	[CmdletBinding()]
	param
(
		[parameter(
			 ValueFromPipeline = $true,
			 position = 0,
			 Mandatory = $true)]
	[string]$computername
)

	process
	{
		$Request = @{
			'domain'	  = 'domain1.company.net'
			'name'    = $computername
		}
		$lab = Invoke-WebRequest -Uri https://reporting.company.net/searchcomputer.php -Body $Request -Method Post

		$output = $lab.ParsedHtml.body.getElementsBytagname('TD') | select -expand innerhtml

		if ($output[7] -match '\D\d\d\d\d\d\d\d')
		{
			$user = Get-ADUser -Identity $output[7] | select -ExpandProperty name
		}
		else
		{
			$user = "Unknown"
			$output[7]= "Unknown"
		}

		$result = New-Object PSObject -Property @{
			Computername	    = $output[0];
			OU				    = $output[2];
			IP				    = $output[6];
			OS				    = $output[3];
			LastUser		    = $output[7];
			LastUSerFullName    = $user;
			LastSeen		    = $output[5];
			Master			    = $output[4];
		}
		Write-Output $result | select computername, ou, ip, os, master, lastuser, lastuserfullname, lastseen
	}#End Process
}