Who owns MAC prefix B4A4B5?

B4A4B5 is registered to Zen Eye Co.,Ltd in the IEEE MA-L registry.

What devices use B4A4B5?

Any network device with a MAC address starting B4:A4:B5 was manufactured by or for Zen Eye Co.,Ltd.

MA-L · OUI prefix

Zen Eye Co.,Ltd

Any MAC address starting B4:A4:B5 is registered to Zen Eye Co.,Ltd in KR.

OUI prefix	B4A4B5
Vendor	Zen Eye Co.,Ltd
Registry	MA-L (24-bit, large block)
Country	KR
Example MAC	B4:A4:B5:00:00:00

What this means

The IEEE assigned the MA-L block B4A4B5 to Zen Eye Co.,Ltd. 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 B4:A4:B5, it is Zen Eye Co.,Ltd hardware.

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