What this means
The IEEE assigned the MA-M block 4C917AC to Alibaba (Beijing) Software Service Inc.. 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:91:7A:C, it is Alibaba (Beijing) Software Service Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 4C917AC?
4C917AC is registered to Alibaba (Beijing) Software Service Inc. 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. Alibaba (Beijing) Software Service Inc.'s block covers 1,048,576 addresses.
What devices use 4C917AC?
Any network device with a MAC address starting 4C:91:7A:C was manufactured by or for Alibaba (Beijing) Software Service Inc..