What this means
The IEEE assigned the MA-S block 8C1F64B9B to Kromek Limited. 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:B9:B, it is Kromek Limited hardware.
Frequently Asked Questions
Who owns MAC prefix 8C1F64B9B?
8C1F64B9B is registered to Kromek Limited 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. Kromek Limited's block covers 4,096 addresses.
What devices use 8C1F64B9B?
Any network device with a MAC address starting 8C:1F:64:B9:B was manufactured by or for Kromek Limited.