What this means
The IEEE assigned the MA-M block 4C4BF9D to Shenzhen Haichuan Intelligent Information 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 4C:4B:F9:D, it is Shenzhen Haichuan Intelligent Information Technology Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 4C4BF9D?
4C4BF9D is registered to Shenzhen Haichuan Intelligent Information Technology Co., Ltd. in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Shenzhen Haichuan Intelligent Information Technology Co., Ltd.'s block covers 1,048,576 addresses.
What devices use 4C4BF9D?
Any network device with a MAC address starting 4C:4B:F9:D was manufactured by or for Shenzhen Haichuan Intelligent Information Technology Co., Ltd..