What this means
The IEEE assigned the MA-L block 0CC3B8 to Shenzhen Jiahua Zhongli 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 0C:C3:B8, it is Shenzhen Jiahua Zhongli Technology Co., LTD hardware.