What this means
The IEEE assigned the MA-S block 8C1F64A7C to Proprietary Controls Systems Corporation. 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:A7:C, it is Proprietary Controls Systems Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix 8C1F64A7C?
8C1F64A7C is registered to Proprietary Controls Systems Corporation in the IEEE MA-S registry.
What does the MA-S registry type mean?
An MA-S assignment, formerly called OUI-36, covers 36 bits, giving the vendor 4,096 device addresses, the smallest block the IEEE issues. Proprietary Controls Systems Corporation's block covers 4,096 addresses.
What devices use 8C1F64A7C?
Any network device with a MAC address starting 8C:1F:64:A7:C was manufactured by or for Proprietary Controls Systems Corporation.