Who owns MAC prefix 0020BF?

0020BF is registered to AEHR TEST SYSTEMS in the IEEE MA-L registry.

What devices use 0020BF?

Any network device with a MAC address starting 00:20:BF was manufactured by or for AEHR TEST SYSTEMS.

MA-L · OUI prefix

AEHR TEST SYSTEMS

Any MAC address starting 00:20:BF is registered to AEHR TEST SYSTEMS in US.

OUI prefix	0020BF
Vendor	AEHR TEST SYSTEMS
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	00:20:BF:00:00:00

What this means

The IEEE assigned the MA-L block 0020BF to AEHR TEST SYSTEMS. 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 00:20:BF, it is AEHR TEST SYSTEMS hardware.

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