Who owns MAC prefix C4FFBC7?

C4FFBC7 is registered to Critical Link in the IEEE MA-M registry.

What devices use C4FFBC7?

Any network device with a MAC address starting C4:FF:BC:7 was manufactured by or for Critical Link.

MA-M · OUI prefix

Critical Link

Any MAC address starting C4:FF:BC:7 is registered to Critical Link in US.

OUI prefix	C4FFBC7
Vendor	Critical Link
Registry	MA-M (28-bit, medium block)
Country	US
Example MAC	C4:FF:BC:7:00:00:00

What this means

The IEEE assigned the MA-M block C4FFBC7 to Critical Link. 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 C4:FF:BC:7, it is Critical Link hardware.

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