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#Searching the list will allow you to determine whether your company or any parent/subsidiary companies already own an assignment. When searching the public listing, addresses should be entered as XX-XX-XX. #Group by MAC in ARP #https://www.jesusninoc.com/powershell/2014/05/12/group-by-mac-in-arp/ $all="" $arps=arp -a foreach($line in $arps) { if($line -match "mico") { $a=$line.Replace(" "," ") $a=$a.Split(" ") $all=$all+"*"+$a[9] } } #Search MAC in https://standards.ieee.org/ foreach($mac in ($all.Split("*") | Group-Object).name) { $mac.Substring(0,8) $url="https://standards.ieee.org/cgi-bin/ouisearch?"+$mac.Substring(0,8) $result=Invoke-WebRequest $url #Here are the results of your search through the public section of the IEEE Standards MA-L database report for MAC $result.AllElements | Where tagName -eq "PRE" } |