What this means
The IEEE assigned the MA-M block 245DFC3 to Shenzhen Hailuck Electronic 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 24:5D:FC:3, it is Shenzhen Hailuck Electronic Technology CO.,LTD hardware.