What this means
The IEEE assigned the MA-M block D016F08 to Shenzhen DOOGEE Hengtong 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 D0:16:F0:8, it is Shenzhen DOOGEE Hengtong Technology CO.,LTD hardware.