What this means
The IEEE assigned the MA-M block A028330 to GERSYS GmbH. 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 A0:28:33:0, it is GERSYS GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix A028330?
A028330 is registered to GERSYS GmbH in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. GERSYS GmbH's block covers 1,048,576 addresses.
What devices use A028330?
Any network device with a MAC address starting A0:28:33:0 was manufactured by or for GERSYS GmbH.