What this means
The IEEE assigned the MA-M block D0A0117 to Shenzhen Liandian Communication Technology Co.LTD. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting D0:A0:11:7, it is Shenzhen Liandian Communication Technology Co.LTD hardware.