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.
Frequently Asked Questions
Who owns MAC prefix 6CA401?
6CA401 is registered to essensys plc in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. essensys plc's block covers 16,777,216 addresses.
What devices use 6CA401?
Any network device with a MAC address starting 6C:A4:01 was manufactured by or for essensys plc.