What this means
The IEEE assigned the MA-S block 8C1F64975 to Preston Industries dba PolyScience. 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:64:97:5, it is Preston Industries dba PolyScience hardware.
Frequently Asked Questions
Who owns MAC prefix 8C1F64975?
8C1F64975 is registered to Preston Industries dba PolyScience 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. Preston Industries dba PolyScience's block covers 4,096 addresses.
What devices use 8C1F64975?
Any network device with a MAC address starting 8C:1F:64:97:5 was manufactured by or for Preston Industries dba PolyScience.