Who owns MAC prefix 001603?

001603 is registered to COOLKSKY Co., LTD in the IEEE MA-L registry.

What devices use 001603?

Any network device with a MAC address starting 00:16:03 was manufactured by or for COOLKSKY Co., LTD.

MA-L · OUI prefix

COOLKSKY Co., LTD

Any MAC address starting 00:16:03 is registered to COOLKSKY Co., LTD in KR.

OUI prefix	001603
Vendor	COOLKSKY Co., LTD
Registry	MA-L (24-bit, large block)
Country	KR
Example MAC	00:16:03:00:00:00

What this means

The IEEE assigned the MA-L block 001603 to COOLKSKY 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 00:16:03, it is COOLKSKY Co., LTD hardware.

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