Who owns MAC prefix 54A104?

54A104 is registered to OPTOWL Co.,Ltd in the IEEE MA-L registry.

What devices use 54A104?

Any network device with a MAC address starting 54:A1:04 was manufactured by or for OPTOWL Co.,Ltd.

MA-L · OUI prefix

OPTOWL Co.,Ltd

Any MAC address starting 54:A1:04 is registered to OPTOWL Co.,Ltd in JP.

OUI prefix	54A104
Vendor	OPTOWL Co.,Ltd
Registry	MA-L (24-bit, large block)
Country	JP
Example MAC	54:A1:04:00:00:00

What this means

The IEEE assigned the MA-L block 54A104 to OPTOWL 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 54:A1:04, it is OPTOWL Co.,Ltd hardware.

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