What this means
The IEEE assigned the MA-M block 18A59CE to BMC Messsysteme 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 18:A5:9C:E, it is BMC Messsysteme GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 18A59CE?
18A59CE is registered to BMC Messsysteme 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. BMC Messsysteme GmbH's block covers 1,048,576 addresses.
What devices use 18A59CE?
Any network device with a MAC address starting 18:A5:9C:E was manufactured by or for BMC Messsysteme GmbH.