What this means

The IEEE assigned the MA-S block 8C1F64A4F to Ascon Tecnologic S.r.l.. 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:A4:F, it is Ascon Tecnologic S.r.l. hardware.