What this means
The IEEE assigned the MA-M block F490CBC to Cheetah Medical. 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 F4:90:CB:C, it is Cheetah Medical hardware.
Frequently Asked Questions
Who owns MAC prefix F490CBC?
F490CBC is registered to Cheetah Medical 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. Cheetah Medical's block covers 1,048,576 addresses.
What devices use F490CBC?
Any network device with a MAC address starting F4:90:CB:C was manufactured by or for Cheetah Medical.