Who owns MAC prefix 54DF00?

54DF00 is registered to Ulterius Technologies, LLC in the IEEE MA-L registry.

What devices use 54DF00?

Any network device with a MAC address starting 54:DF:00 was manufactured by or for Ulterius Technologies, LLC.

MA-L · OUI prefix

Ulterius Technologies, LLC

Any MAC address starting 54:DF:00 is registered to Ulterius Technologies, LLC in US.

OUI prefix	54DF00
Vendor	Ulterius Technologies, LLC
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	54:DF:00:00:00:00

What this means

The IEEE assigned the MA-L block 54DF00 to Ulterius Technologies, 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:DF:00, it is Ulterius Technologies, LLC hardware.

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