Who owns MAC prefix 644BF0?

644BF0 is registered to CalDigit, Inc in the IEEE MA-L registry.

What devices use 644BF0?

Any network device with a MAC address starting 64:4B:F0 was manufactured by or for CalDigit, Inc.

MA-L · OUI prefix

CalDigit, Inc

Any MAC address starting 64:4B:F0 is registered to CalDigit, Inc in US.

OUI prefix	644BF0
Vendor	CalDigit, Inc
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	64:4B:F0:00:00:00

What this means

The IEEE assigned the MA-L block 644BF0 to CalDigit, Inc. 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 64:4B:F0, it is CalDigit, Inc hardware.

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