Who owns MAC prefix B86491?

B86491 is registered to CK Telecom Ltd in the IEEE MA-L registry.

What devices use B86491?

Any network device with a MAC address starting B8:64:91 was manufactured by or for CK Telecom Ltd.

MA-L · OUI prefix

CK Telecom Ltd

Any MAC address starting B8:64:91 is registered to CK Telecom Ltd in CN.

OUI prefix	B86491
Vendor	CK Telecom Ltd
Registry	MA-L (24-bit, large block)
Country	CN
Example MAC	B8:64:91:00:00:00

What this means

The IEEE assigned the MA-L block B86491 to CK Telecom 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 B8:64:91, it is CK Telecom Ltd hardware.

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