Who owns MAC prefix 00D040?

00D040 is registered to SYSMATE CO., LTD. in the IEEE MA-L registry.

What devices use 00D040?

Any network device with a MAC address starting 00:D0:40 was manufactured by or for SYSMATE CO., LTD..

MA-L · OUI prefix

SYSMATE CO., LTD.

Any MAC address starting 00:D0:40 is registered to SYSMATE CO., LTD. in KR.

OUI prefix	00D040
Vendor	SYSMATE CO., LTD.
Registry	MA-L (24-bit, large block)
Country	KR
Example MAC	00:D0:40:00:00:00

What this means

The IEEE assigned the MA-L block 00D040 to SYSMATE 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:D0:40, it is SYSMATE CO., LTD. hardware.

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