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Last active August 29, 2015 14:18
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function Get-MACAddress {
Sends an Address Resolution Protocol (ARP) request to obtain the physical address that corresponds to the specified destination IPv4 address.
param (
[Parameter(Position = 0)]
[string] $IPAddress = ([System.Net.NetworkInformation.NetworkInterface]::GetAllNetworkInterfaces() | Where-Object {$_.OperationalStatus -eq 'Up' -and $_.NetworkInterfaceType -ne [System.Net.NetworkInformation.NetworkInterfaceType]::Loopback})[0].GetIPProperties().UnicastAddresses.Address.ToString()
$sign = @"
using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.Net.NetworkInformation;
using System.Runtime.InteropServices;
public static class NetUtils
[System.Runtime.InteropServices.DllImport("iphlpapi.dll", ExactSpelling = true)]
static extern int SendARP(int DestIP, int SrcIP, byte[] pMacAddr, ref int PhyAddrLen);
public static string GetMacAddress(String addr)
IPAddress IPaddr = IPAddress.Parse(addr);
byte[] mac = new byte[6];
int L = 6;
SendARP(BitConverter.ToInt32(IPaddr.GetAddressBytes(), 0), 0, mac, ref L);
String macAddr = BitConverter.ToString(mac, 0, L);
return (macAddr.Replace('-',':'));
catch (Exception ex)
return (ex.Message);
$type = Add-Type -TypeDefinition $sign -Language CSharp -PassThru
Write-Output ($type::GetMacAddress($IPAddress))
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