Who owns MAC prefix A4E9A3?

A4E9A3 is registered to Honest Technology Co., Ltd in the IEEE MA-L registry.

What devices use A4E9A3?

Any network device with a MAC address starting A4:E9:A3 was manufactured by or for Honest Technology Co., Ltd.

MA-L · OUI prefix

Honest Technology Co., Ltd

Any MAC address starting A4:E9:A3 is registered to Honest Technology Co., Ltd in KR.

OUI prefix	A4E9A3
Vendor	Honest Technology Co., Ltd
Registry	MA-L (24-bit, large block)
Country	KR
Example MAC	A4:E9:A3:00:00:00

What this means

The IEEE assigned the MA-L block A4E9A3 to Honest Technology 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 A4:E9:A3, it is Honest Technology Co., Ltd hardware.

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