Код:

param (
	#[parameter(Mandatory=$true)]
	[string]$outfile = "путь\1.csv",
	$enc1 = 65001,
	$enc2 = 28591,
	[int[]]$SelectTable = 1
)

# Remove-Item -Path $outfile -ErrorAction Ignore
function convert ($from, $to){
	begin{
		$fenc = [text.encoding]::getencoding($from)
		$tenc = [text.encoding]::getencoding($to)
	}
	process{
		$a = $tenc.getbytes($_)
		$fenc.getstring($a)
	}
}
[net.servicepointmanager]::securityprotocol = 0
$ips = 129..150 |% {[string]$((Get-Netipaddress |? ipaddress -match "^10\.").ipaddress -replace "\d+$") + $_}|sort
$ips|%{
	
		try {
            $a = $null
			$a = (iwr $_ -timeout 1 -ea 1).content
			#$a = gc $_ -raw -enc utf8
			$content = if ($a -match [char]208){
				if ($a -match 'windows-1251'){$enc1,$enc2 = 1251,1252}
				$a|convert $enc1 $enc2
			} else {$a}
			
			$html = [net.webutility]::htmldecode($content)|convertfrom-html
			[array]$tables = $html.selectnodes('//table')
			# Исключение вложенных таблиц:
			$tables = $tables|?{$_.innerhtml -notmatch 'table'}
			
			if ([string]::isnullorempty($selecttable)){
				$number = 0..($tables.count-1)
			} else {$number = $selecttable}
			
			$tbl = $tables[$number]|%{$n=0}{
				$tr = if($_.element('tbody')){
					$_.element('tbody').elements('tr')
				} else {$_.elements('tr')}
				$headers = @()
				if($headers = $tr|?{$_.element('th') -ne $null}|
				%{$_.elements('th')}|select -exp innertext){
					$headers=$headers.trim()
				} else {
					$headers = 1..(
						[linq.parallelenumerable]::max(
							[linq.parallelenumerable]::asparallel(($tr|
							%{($_.elements('td')|? innertext -ne ''|%{$_}).count}))
						)
					)|%{"H$_"}
				}
				$rowind = ,1 * $headers.count
				$tr|?{$_.elements('td') -ne ''}|%{
					$row = $_.elements('td')|? innertext -ne ''|%{
						$attr = $_.attributes
						if ($attr){
							$rowspan = ($attr|? name -eq 'rowspan'|select value).value
							$colspan = ($attr|? name -eq 'colspan'|select value).value
						}
						[pscustomobject]@{
							'InnerText' = $_.innertext
							'RowSpan' = if($rowspan){[int]$rowspan} else {1}
							'ColSpan' = if($colspan){[int]$colspan} else {1}
						}
					}
					$str = [ordered]@{}
					$k=0
					foreach ($item in $row){
						if ($rowind[$k] -gt 1){
							while ($rowind[$k] -gt 1){
								$str[$headers[$k]] = $null
								$rowind[$k] -= 1
								$k++
							}
						}
						if (($colspan = $item.colspan) -gt 1) {
							$str[$headers[$k]] = if($item.innertext){
								$item.innertext.trim()
							} else {$null}
							if ($item.rowspan -gt 1){$rowind[$k] = $item.rowspan}
							$k++
							while ($colspan -gt 1){
								$str[$headers[$k]] = $null
								$colspan -=1
								if ($rowind[$k] -gt 1){$rowind[$k]-=1}
								$k++
							}
						} else {
							$str[$headers[$k]] = if($item.innertext){
								$item.innertext.trim()
							} else {$null}
							if ($item.rowspan -gt 1){$rowind[$k] = $item.rowspan}
							$k++
						}
					}
					[pscustomobject]$str
				}
			}
			[pscustomobject]@{
				'IP'				= $_
				'MAC-адрес' 		= if ([array]::indexof($tbl.h1,'MAC-адрес') -ne -1){
										$tbl[([array]::indexof($tbl.h1,'MAC-адрес'))].h2
									  } else {$tbl[([array]::indexof($tbl.h1,'MAC Address'))].h2}
				'Номер телефона'	= if ([array]::indexof($tbl.h1,'Номер телефона') -ne -1){
										$tbl[([array]::indexof($tbl.h1,'Номер телефона'))].h2
									  } elseif ([array]::indexof($tbl.h1,'Номер телефона 1') -ne -1){
									  	$tbl[([array]::indexof($tbl.h1,'Номер телефона 1'))].h2
									  } else {
									  	$tbl[([array]::indexof($tbl.h1,'Phone DN'))].h2
									  }
				'Серийный номер'	= if ([array]::indexof($tbl.h1,'Серийный номер') -ne -1){
										$tbl[([array]::indexof($tbl.h1,'Серийный номер'))].h2
									  } else {$tbl[([array]::indexof($tbl.h1,'Serial Number'))].h2}
				'Номер модели'		= if ([array]::indexof($tbl.h1,'Номер модели') -ne -1){
										$tbl[([array]::indexof($tbl.h1,'Номер модели'))].h2
									  } else {$tbl[([array]::indexof($tbl.h1,'Model Number'))].h2}
			}
           
write-host $_ phone information received -for Green	
} catch { write-host  -for red | Clear-Host		} 
 write-host  $_  -for red
	} |export-csv $outfile -notype -enc utf8 -d ';' -append