What this means
The IEEE assigned the MA-M block 28F537A to Honeywell Safety Products USA, 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 28:F5:37:A, it is Honeywell Safety Products USA, Inc hardware.
Frequently Asked Questions
Who owns MAC prefix 28F537A?
28F537A is registered to Honeywell Safety Products USA, 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. Honeywell Safety Products USA, Inc's block covers 1,048,576 addresses.
What devices use 28F537A?
Any network device with a MAC address starting 28:F5:37:A was manufactured by or for Honeywell Safety Products USA, Inc.