Who owns MAC prefix 3C427E7?

3C427E7 is registered to GJS Co., Ltd. in the IEEE MA-M registry.

What devices use 3C427E7?

Any network device with a MAC address starting 3C:42:7E:7 was manufactured by or for GJS Co., Ltd..

MA-M · OUI prefix

GJS Co., Ltd.

Any MAC address starting 3C:42:7E:7 is registered to GJS Co., Ltd. in CN.

OUI prefix	3C427E7
Vendor	GJS Co., Ltd.
Registry	MA-M (28-bit, medium block)
Country	CN
Example MAC	3C:42:7E:7:00:00:00

What this means

The IEEE assigned the MA-M block 3C427E7 to GJS 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 3C:42:7E:7, it is GJS Co., Ltd. hardware.

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