Public/Get-MacVendor.ps1
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<#
.Synopsis Resolve MacAddresses To Vendors .Description This Function Queries The MacVendors API With Supplied MacAdderess And Returns Manufacturer Information If A Match Is Found .Parameter MacAddress MacAddress To Be Resolved .Parameter SkipDNS If you are using public DNS, use SKipDNS. This will prevent long delays caused by retrieving Hostnames. .Parameter Subnet Specify a local subnet to query .Example Get-MacVendor -MacAddress 00:00:00:00:00:00 .Example Get-MacVendor -MacAddress 00:00:00:00:00:00,11:11:11:11:11:11 .Example Get-MacVendor -Subnet 192.168.0 | Sort-Object Vendor Get Mac addresses for all devices on the local subnet and query their OUI .Link https://github.com/TheTaylorLee/AdminToolbox #> function Get-MacVendor { [CmdletBinding(DefaultParameterSetName = 'MacAddress')] param( [Parameter (Mandatory = $true, ValueFromPipeline = $false, ParameterSetName = 'MacAddress')] [ValidatePattern("^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$")] [string[]]$MacAddress, [Parameter (Mandatory = $true, ParameterSetName = 'Local Subnet')] [string]$Subnet, [Parameter (Mandatory = $false, ParameterSetName = 'Local Subnet')] [switch]$SkipDNS ) if ($null -ne $MacAddress) { foreach ($Mac in $MacAddress) { try { Invoke-RestMethod -Method Get -Uri https://api.macvendors.com/$Mac -ErrorAction SilentlyContinue | ForEach-Object { [pscustomobject]@{ Vendor = $_ MacAddress = $Mac } } Start-Sleep -Milliseconds 1000 } catch { Write-Warning -Message "$Mac, $_" } } } else { Get-NetNeighbor | Select-Object LinkLayerAddress, IPAddress | Where-Object { ($_.IPAddress -like "*$Subnet*") -and ($_.LinkLayerAddress -ne '00-00-00-00-00-00') -and ($_.LinkLayerAddress -ne 'ff-ff-ff-ff-ff-ff') } | ForEach-Object { try { $Mac = $_.LinkLayerAddress $IP = $_.IPAddress Invoke-RestMethod -Method Get -Uri https://api.macvendors.com/$Mac -ErrorAction SilentlyContinue | ForEach-Object { if ($SkipDNS -eq $false) { $DNS = Resolve-DnsName $IP -QuickTimeout -NoRecursion -ErrorAction 'SilentlyContinue' [pscustomobject]@{ Hostname = $DNS.NameHost IP = $IP MacAddress = $Mac Vendor = $_ } } else { [pscustomobject]@{ IP = $IP MacAddress = $Mac Vendor = $_ } } Start-Sleep -Milliseconds 1000 } } catch { Write-Warning -Message "$Mac, $_" } } } } |