Who owns MAC prefix B8B1C7?

B8B1C7 is registered to BT&COM CO.,LTD in the IEEE MA-L registry.

What devices use B8B1C7?

Any network device with a MAC address starting B8:B1:C7 was manufactured by or for BT&COM CO.,LTD.

MA-L · OUI prefix

BT&COM CO.,LTD

Any MAC address starting B8:B1:C7 is registered to BT&COM CO.,LTD in KR.

OUI prefix	B8B1C7
Vendor	BT&COM CO.,LTD
Registry	MA-L (24-bit, large block)
Country	KR
Example MAC	B8:B1:C7:00:00:00

What this means

The IEEE assigned the MA-L block B8B1C7 to BT&COM 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 B8:B1:C7, it is BT&COM CO.,LTD hardware.

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