What this means
The IEEE assigned the MA-M block A0C5F21 to KNS Group LLC (YADRO Company). 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 A0:C5:F2:1, it is KNS Group LLC (YADRO Company) hardware.
Frequently Asked Questions
Who owns MAC prefix A0C5F21?
A0C5F21 is registered to KNS Group LLC (YADRO Company) 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. KNS Group LLC (YADRO Company)'s block covers 1,048,576 addresses.
What devices use A0C5F21?
Any network device with a MAC address starting A0:C5:F2:1 was manufactured by or for KNS Group LLC (YADRO Company).