Who owns MAC prefix 6CA401?

6CA401 is registered to essensys plc in the IEEE MA-L registry.

What devices use 6CA401?

Any network device with a MAC address starting 6C:A4:01 was manufactured by or for essensys plc.

MA-L · OUI prefix

essensys plc

Any MAC address starting 6C:A4:01 is registered to essensys plc.

OUI prefix	6CA401
Vendor	essensys plc
Registry	MA-L (24-bit, large block)
Example MAC	6C:A4:01:00:00:00

What this means

The IEEE assigned the MA-L block 6CA401 to essensys plc. 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 6C:A4:01, it is essensys plc hardware.

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