Who owns MAC prefix 0040A0?

0040A0 is registered to GOLDSTAR CO., LTD. in the IEEE MA-L registry.

What devices use 0040A0?

Any network device with a MAC address starting 00:40:A0 was manufactured by or for GOLDSTAR CO., LTD..

MA-L · OUI prefix

GOLDSTAR CO., LTD.

Any MAC address starting 00:40:A0 is registered to GOLDSTAR CO., LTD. in KR.

OUI prefix	0040A0
Vendor	GOLDSTAR CO., LTD.
Registry	MA-L (24-bit, large block)
Country	KR
Example MAC	00:40:A0:00:00:00

What this means

The IEEE assigned the MA-L block 0040A0 to GOLDSTAR 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 00:40:A0, it is GOLDSTAR CO., LTD. hardware.

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