PowerShell で、

$guid = "{GUID-1 〜 XXX}"

$a = "HKLM\SYSTEM\CurrentControlSet\Control\Network\{GUID-2 〜 YYY}\"+ $guid +"\Connection";
$b = "HKLM\system\CurrentControlSet\services\Tcpip\Parameters\Interfaces\" + $guid

reg query $a /v "Name";
reg query $b /v "DhcpSubnetMask"

出力
Name REG_SZ イーサネット
DhcpSubnetMask REG_SZ 255.255.255.0