Who owns MAC prefix 28F5375?

28F5375 is registered to Atomrock LLC in the IEEE MA-M registry.

What devices use 28F5375?

Any network device with a MAC address starting 28:F5:37:5 was manufactured by or for Atomrock LLC.

MA-M · OUI prefix

Atomrock LLC

Any MAC address starting 28:F5:37:5 is registered to Atomrock LLC in US.

OUI prefix	28F5375
Vendor	Atomrock LLC
Registry	MA-M (28-bit, medium block)
Country	US
Example MAC	28:F5:37:5:00:00:00

What this means

The IEEE assigned the MA-M block 28F5375 to Atomrock 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 28:F5:37:5, it is Atomrock LLC hardware.

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