What this means
The IEEE assigned the MA-M block 54A4937 to RED Hydrogen LLC. 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 54:A4:93:7, it is RED Hydrogen LLC hardware.
Frequently Asked Questions
Who owns MAC prefix 54A4937?
54A4937 is registered to RED Hydrogen LLC 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. RED Hydrogen LLC's block covers 1,048,576 addresses.
What devices use 54A4937?
Any network device with a MAC address starting 54:A4:93:7 was manufactured by or for RED Hydrogen LLC.