Get built-in MAC Addresses from Laptops / Desktops in C# excluding all other

Question

I would like to get ONLY the built-in MAC Addresses from Laptops / Desktops, except other adapters (for Virtual Machines, VPNs, other adapters). The other adapters should be not listed!

I come up with this code:

        static void Main(string[] args)
        {
            string mac = "0";
            using (ManagementObjectSearcher searcher = new
                              ManagementObjectSearcher(@"root\CIMV2",
                              string.Format(@"SELECT * FROM  Win32_NetworkAdapter WHERE NOT PNPDeviceID LIKE 'ROOT\\%'")))
            {
                    bool existingnic = false;
                    foreach (ManagementObject share in searcher.Get())
                    {
                        if (share.Properties["AdapterType"].Value != null && 
                            share.Properties["AdapterType"].Value.Equals("Ethernet 802.3") &&
                            share.Properties["MACAddress"].Value != null
                            && !share.Properties["MACAddress"].Value.Equals(String.Empty))
                        {
                            if (Convert.ToBoolean(share.Properties["PhysicalAdapter"].Value))
                            {
                                mac = (Int64.Parse(mac.ToString(), System.Globalization.NumberStyles.HexNumber)
                                    + Int64.Parse(share.Properties["MACAddress"].Value.ToString().Replace(":",""), System.Globalization.NumberStyles.HexNumber)).ToString();

                                Console.WriteLine(share.Properties["MACAddress"].Value.ToString().Replace(":", ""));
                                //Console.WriteLine(Int64.Parse(share.Properties["MACAddress"].Value.ToString().Replace(":", ""), System.Globalization.NumberStyles.HexNumber).ToString());
                                existingnic = true;
                                break;
                            }
                        }
                    }

                    if(!existingnic)
                    foreach (ManagementObject share in searcher.Get())
                    {
                        if (share.Properties["AdapterType"].Value != null &&
                            share.Properties["AdapterType"].Value.Equals("Wireless") &&
                            share.Properties["MACAddress"].Value != null
                            && !share.Properties["MACAddress"].Value.Equals(String.Empty))
                        {
                            if (Convert.ToBoolean(share.Properties["PhysicalAdapter"].Value))
                            {
                                mac = (Int64.Parse(mac.ToString(), System.Globalization.NumberStyles.HexNumber)
                                    + Int64.Parse(share.Properties["MACAddress"].Value.ToString().Replace(":", ""), System.Globalization.NumberStyles.HexNumber)).ToString();

                                Console.WriteLine(share.Properties["MACAddress"].Value.ToString().Replace(":", ""));
                                //Console.WriteLine(Int64.Parse(share.Properties["MACAddress"].Value.ToString().Replace(":", ""), System.Globalization.NumberStyles.HexNumber).ToString());

                               // break;
                            }
                        }
                    }
                }
            
            string myHex = IntToHexString(Convert.ToInt64(mac), 12);
            Console.WriteLine(myHex);
            Console.ReadLine();
        }

Thanks

I tried to use the above code.

Note: I found a list with MAC Addresses that identifies a company / organization, but I don't know which to include and which not. The list I found: ieee.org