What devices use F81B04?

Any network device with a MAC address starting F8:1B:04 was manufactured by or for Zhong Shan City Richsound Electronic Industrial Ltd.

MA-L · OUI prefix

Zhong Shan City Richsound Electronic Industrial Ltd

Q: Who owns MAC prefix F81B04?

F81B04 is registered to Zhong Shan City Richsound Electronic Industrial Ltd in the IEEE MA-L registry.

Any MAC address starting F8:1B:04 is registered to Zhong Shan City Richsound Electronic Industrial Ltd in CN.

OUI prefix	F81B04
Vendor	Zhong Shan City Richsound Electronic Industrial Ltd
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	F8:1B:04:00:00:00

What this means

The IEEE assigned the MA-L block F81B04 to Zhong Shan City Richsound Electronic Industrial 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 F8:1B:04, it is Zhong Shan City Richsound Electronic Industrial Ltd hardware.

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