Who owns MAC prefix 3CB72B?

3CB72B is registered to PLUMgrid Inc in the IEEE MA-L registry.

What devices use 3CB72B?

Any network device with a MAC address starting 3C:B7:2B was manufactured by or for PLUMgrid Inc.

MA-L · OUI prefix

PLUMgrid Inc

Any MAC address starting 3C:B7:2B is registered to PLUMgrid Inc in US.

OUI prefix	3CB72B
Vendor	PLUMgrid Inc
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	3C:B7:2B:00:00:00

What this means

The IEEE assigned the MA-L block 3CB72B to PLUMgrid 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 3C:B7:2B, it is PLUMgrid Inc hardware.

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