Who owns MAC prefix 500B91A?

500B91A is registered to New Audio LLC in the IEEE MA-M registry.

What devices use 500B91A?

Any network device with a MAC address starting 50:0B:91:A was manufactured by or for New Audio LLC.

MA-M · OUI prefix

New Audio LLC

Any MAC address starting 50:0B:91:A is registered to New Audio LLC in US.

OUI prefix	500B91A
Vendor	New Audio LLC
Registry	MA-M (28-bit, medium block)
Country	US
Example MAC	50:0B:91:A:00:00:00

What this means

The IEEE assigned the MA-M block 500B91A to New Audio 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 50:0B:91:A, it is New Audio LLC hardware.

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