Who owns MAC prefix B456B9?

B456B9 is registered to Teraspek Technologies Co.,Ltd in the IEEE MA-L registry.

What devices use B456B9?

Any network device with a MAC address starting B4:56:B9 was manufactured by or for Teraspek Technologies Co.,Ltd.

MA-L · OUI prefix

Teraspek Technologies Co.,Ltd

Any MAC address starting B4:56:B9 is registered to Teraspek Technologies Co.,Ltd in CN.

OUI prefix	B456B9
Vendor	Teraspek Technologies Co.,Ltd
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	B4:56:B9:00:00:00

What this means

The IEEE assigned the MA-L block B456B9 to Teraspek Technologies 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 B4:56:B9, it is Teraspek Technologies Co.,Ltd hardware.

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