What this means
The IEEE assigned the MA-L block 18204C to Kummler+Matter AG. 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 18:20:4C, it is Kummler+Matter AG hardware.
Frequently Asked Questions
Who owns MAC prefix 18204C?
18204C is registered to Kummler+Matter AG 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. Kummler+Matter AG's block covers 16,777,216 addresses.
What devices use 18204C?
Any network device with a MAC address starting 18:20:4C was manufactured by or for Kummler+Matter AG.