Who owns MAC prefix 3C4015?

3C4015 is registered to 12mm Health Technology (Hainan) Co., Ltd. in the IEEE MA-L registry.

What devices use 3C4015?

Any network device with a MAC address starting 3C:40:15 was manufactured by or for 12mm Health Technology (Hainan) Co., Ltd..

MA-L · OUI prefix

12mm Health Technology (Hainan) Co., Ltd.

Any MAC address starting 3C:40:15 is registered to 12mm Health Technology (Hainan) Co., Ltd. in CN.

OUI prefix	3C4015
Vendor	12mm Health Technology (Hainan) Co., Ltd.
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	3C:40:15:00:00:00

What this means

The IEEE assigned the MA-L block 3C4015 to 12mm Health Technology (Hainan) 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:40:15, it is 12mm Health Technology (Hainan) Co., Ltd. hardware.

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