Who owns MAC prefix D47B6B?

D47B6B is registered to Shanghai Cygnus Semiconductor Co., Ltd. in the IEEE MA-L registry.

What devices use D47B6B?

Any network device with a MAC address starting D4:7B:6B was manufactured by or for Shanghai Cygnus Semiconductor Co., Ltd..

MA-L · OUI prefix

Shanghai Cygnus Semiconductor Co., Ltd.

Any MAC address starting D4:7B:6B is registered to Shanghai Cygnus Semiconductor Co., Ltd. in CN.

OUI prefix	D47B6B
Vendor	Shanghai Cygnus Semiconductor Co., Ltd.
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	D4:7B:6B:00:00:00

What this means

The IEEE assigned the MA-L block D47B6B to Shanghai Cygnus Semiconductor 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 D4:7B:6B, it is Shanghai Cygnus Semiconductor Co., Ltd. hardware.

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