What this means
The IEEE assigned the MA-L block 0002A3 to Hitachi Energy Switzerland Ltd. 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 00:02:A3, it is Hitachi Energy Switzerland Ltd hardware.
Frequently Asked Questions
Who owns MAC prefix 0002A3?
0002A3 is registered to Hitachi Energy Switzerland Ltd 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. Hitachi Energy Switzerland Ltd's block covers 16,777,216 addresses.
What devices use 0002A3?
Any network device with a MAC address starting 00:02:A3 was manufactured by or for Hitachi Energy Switzerland Ltd.