What devices use 3C9F81?

Any network device with a MAC address starting 3C:9F:81 was manufactured by or for Shenzhen CATIC Bit Communications Technology Co.,Ltd.

MA-L · OUI prefix

Shenzhen CATIC Bit Communications Technology Co.,Ltd

Q: Who owns MAC prefix 3C9F81?

3C9F81 is registered to Shenzhen CATIC Bit Communications Technology Co.,Ltd in the IEEE MA-L registry.

Any MAC address starting 3C:9F:81 is registered to Shenzhen CATIC Bit Communications Technology Co.,Ltd in CN.

OUI prefix	3C9F81
Vendor	Shenzhen CATIC Bit Communications Technology Co.,Ltd
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	3C:9F:81:00:00:00

What this means

The IEEE assigned the MA-L block 3C9F81 to Shenzhen CATIC Bit Communications Technology 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:9F:81, it is Shenzhen CATIC Bit Communications Technology Co.,Ltd hardware.

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