What this means
The IEEE assigned the MA-S block 8C1F64367 to LAMTEC Mess- und Regeltechnik für Feuerungen GmbH & Co. KG. 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 8C:1F:64:36:7, it is LAMTEC Mess- und Regeltechnik für Feuerungen GmbH & Co. KG hardware.